1985 BMW 325 news, pictures, and information
The 320i borrowed many of the style cues from the BMW 2002 such as the distinctive forward-leaning grille. Both were two-door sedans but the 320i had a slightly wider stance and was 1.5 inches longer. Disc brakes were placed on the front while the rear had drums. The suspension was MacPherson struts in the front and trailing arm in the back. Under the hood sat a 2.0-liter Bosch K-Jetronic fuel-injected inline four capable of producing 110 horsepower. The Getrag four-speed manual gearbox was standard but a ZF three-speed automatic was optional.
In 1980, the engine decreased in size to 1.8 liters. To cope with emission regulations, a three-way catalyst was adapted to the vehicle; however, this reduced the horsepower rating to 100.
At the close of 1983 the E21 production ceased to make room for the next-generation 3-series, the E30. The E30 brought with it many improvements in styling and mechanical features, but it also cost nearly twice as much as the vehicle it replaced.
To make the most of aerodynamics, the grille became less angled and the hood sloped slowly from the front of the vehicle to the windshield. The wheelbase and length were nearly identical to its predecessor. The engine was the 1.8-liter fuel-injected four cylinder producing 101 horsepower.
The 318i was a two-door sedan introduced in 1984. The 325e quickly followed bringing with it a 2.7-liter inline six-cylinder engine borrowed from the 528e. With 121 horsepower the vehicle could accelerate from zero to sixty in just under nine seconds and reach the quarter-mile in 16.6 seconds. The vehicle was sporty but it was tailored to the economic conditions at the time. The oil embargo and surging gas prices made the three-series an excellent option. With their potent engines and fuel-efficient gearing, the vehicles were able to comply with the concerns of many motorists.
Four-doors and four-speed automatic transmission options were offered on the three series in 1985. Sales for the 318i were dwindling so the decision was made to remove it from the line-up at the close of 1986. 1986 also saw the addition of antilock four-wheel disc brakes and the two-door 325es.
1987 was a big year for the three-series with the addition of the 325i and 325is models, and a convertible option dubbed the 325ic. The 325is was a true sports model bringing back a heritage that had been last seen in the 2002ti. With 168 horsepower and nearly identical torque, it was the most powerful three-series up to that point. The zero-to-sixty mile-per-hour mark was achieved in just 7.4 seconds and the quarter mile in 15.6 seconds. With the large disc brakes on all four corners and sturdy suspension, the performance was amazing.
In 1988 safety and performance were taken to a whole new level with the introduction of the all-wheel-drive 325ix.
By the close of 1991 a replacement for the 3 Series E30 was needed. The E30 had expanded the model lineup to include sedans, coupes, and convertibles with varying engine and transmission options. Replacing the E30 would be tricky, since the company relied upon it for their 'bread-and-butter'.
The replacement came in the form of the 1992 three-series E36. The E36 was the first major departure from the design, styling, and proportions of the BMW 2002. When comparing the E36 with the E30, it was larger, wider, and slightly bigger in every dimension. The windshield was slightly slanted, rather than the straight-up design of the previous models. The aerodynamics further improved and as a side-benefit, reduced road and wind noise. With the increase in vehicle size, the interior room increased for passengers and the engine compartment could accommodate larger engines. The weight distribution was 50/50, a technique that improves a vehicle performance and handling. The front suspension was still MacPherson strut design but the rear suspension received a new 'Z-axle' featuring a multilink system. The rack-and-pinion steering, disc brakes and ABS were carried over from the E30. Under the hood lurked a new 24-valve dual-overhead-cam aluminum six-cylinder engine capable of producing 189 horsepower. When equipped with a five-speed transmission, the 325i could propel from zero-to-sixty in 6.9 seconds.
In 1996 the 325i and 325is received a new 2.8-liter inline six rated at 190 horsepower. In 1998 the 323i convertible and 323is coupe was outfitted with a 2.5-liter M52 engine that produced 168 horsepower.
In 1999 the E46 3-series was introduced. The first versions offered were the 323i and 328i four-door sedans. The body had undergone moderate changes such as a new front end, a rounder roofline, wider wheel arches, and updated headlights. The vehicles sat atop a wider wheelbase and the length had increased.
BMW stated that the structure of the body had been stiffened by 70 percent and the engine moved back in the chassis to take advantage of better weight distribution. Aluminum had been used in many components such as the suspension and engine to reduce the overall weight. The six-cylinder engine was equipped with an advanced VANOS variable valve timing system. The 2.5-liter version produced 170 horsepower while the 2.8-liter produced 193 horsepower. The rear-seats in the E46 were roomier and side-curtain airbags greatly improved the safety for all passengers.
In 2000 the 323ci and 328ci versions were added to the model lineup. A 323i wagon was big news, the first time a wagon had been offered as a three-series in the United States.
In 2003 a DVD-based navigation became available as optional equipment. It provided many new and exciting features, critics, however, gave it poor ratings on being user-friendly. The vehicles became more comfortable and accommodating with a front, center arm-rest for the 325 and a center headrest for all wagons and sedans.
Throughout the life span, up to this point, the M3 has evolved much like the Porsche 911. Even though the size, style, and shape has changed over the years it still resembles, to some extent, the original design. As the style has changed, so has the technology. It has grown in size but weight saving technology and techniques have been implemented. The car has become safer with larger brakes, improved suspension, air bags, ABS, and much more. The cars are reliable, dependable, and fun to drive. Their continued success gives credit to German Engineering and the legacy that is the three-series.
The BMW Motorsport department was tasked with designing and building a powerful, lightweight derivative of the three series. The purpose of the M3 was to compete in the FIA Group A racing. Over five-thousand examples were hand-built by BMW Motorsport.
The first series M3 was based on the E30 platform and was introduced to Europe in 1986 and the United States a year later. The first series stayed into production until 1990 and offered with a variety of motors, including a 238 horsepower engine. In a short amount of time, the E30 M3 scored thousands of victories making it one of the most successful touring machine in history. Under the hood of the M3 lurked a 2.3-liter four-cylinder engine with twin-cam four-valve head with Bosch fuel-injection and rated at 192 horsepower. The 2850 pound vehicle with five-speed manual transmission could go from zero-to-sixty mph in less than seven seconds. The top speed was 140 miles-per-hour.
In 1992 the second generation M3, based on the E36 platform, was introduced at the Paris Auto Show. BMW Motorsports started with the M50TU engine used in various E36 and E34. The bore and stroke was enlarged and the intake was modified to include individual throttle bodies. A new variable valve timing system on the intake camshaft, called VANOS, was adapted to the engine. The engine, dubbed the S50, was capable of producing over 280 horsepower.
The Motorsport department continued the modifications by adapting a new suspension with firmer shocks and springs and larger anti-roll bars. Twelve-inch vented disc brakes provided excellent stopping power, while the M-tuned variable-ratio steering provided instantaneous response.
Aesthetically, the E36 M3 was similar to the regular three series with only a few distinctions. The exterior of the M3 had a front air dam, aerodynamic side mirrors, and deeper side valance panels while the interior had a M shift knob, M instrument cluster, and M sport seats. An M-Technic rear spoiler could be purchased as a dealer option, giving the vehicle a very sportier look.
The E36 M3 did not reach US soil until 1994. Even when it did it was outfitted with a special American version of its potent engine, which was dubbed the S50 B30 USA. Throttle bodies had been removed to lower compression and the continuous VANOS was replaced with a two-stage one. This lowered the cost but also lowered the horsepower, now producing 240.
In 1995, a ZF 5HP18 five-speed automatic transmission was offered on the M3 as optional equipment. During the 1994 to 1995 model year, around 10,000 USA and 18,500 non-USA versions of the M3 were produced.
BMW went a step farther in the performance department with the introduction of the M3 Lightweight introduced in 1995. It was built for competition, having shaved 200 pounds from the standard E36 M3. The inside was void of amenities including air conditioning, rear seat, and radio. Their were only 85 sold in the United States, all were quickly sold.
In 1996 BMW had learned much through its support of the McLaren super car. This translated to a new, larger engine using a Double VANOS system making the intake and exhaust camshafts continuously variable. The engine was called the S50 B32. In Europe the 3.2 liter engine was producing over 320 horsepower while the American version stayed at 240. A Getrag six-speed manual transmission was matted to the engine. The brakes were ventilated discs and 12.4 inches in size. The steering was M-Tuned rack and pinion with variable power assist. Weighing 3150 pounds, the car could accelerate from zero through sixty mph in 5.6 seconds. A four door version was offered.
By Daniel Vaughan | Sep 2005
The success story of a global trendsetter: Five generations of the BMW 3 SeriesThe BMW 3 Series established the compact sports sedan §egmènt and laid the foundation stone for the world's most successful premium model series.
If there is such a thing as a typical BMW, then it is without a doubt the BMW 3 Series. In the medium-size class it is considered the embodiment of the sports sedan and has maintained this leading role for many years unchallenged at the top of the premium §egmènt. Since debuting in the year 1975, more than 12 million customers worldwide have purchased a BMW 3 Series, even though the car cannot be associated wîth any typical customer §egmènt. So the reasons for this remarkable success are manifold.
Then as now, the BMW 3 Series concept was unique – a compact and elegant body design, modern and efficient engines, a classic rear-wheel drive concept and a sporty suspension setup. The result was a maximum degree of driving dynamics and agility. Moreover, BMW demonstrated a strong sense for the spirit of the time and the individual wishes of potential customers. This in turn resulted in innovative body concepts and additional technical features that competitors were unable to offer. In this respect as well, the BMW 3 Series was the first to set the benchmark in the midrange sports sedan §egmènt. The latest examples of this are the measures implemented within the framework of BMW EfficientDynamics, thanks to which the BMW 3 Series achieves the lowest fuel consumption and emission levels in its class.
The BMW 3 Series Convertible, the BMW 3 Series Touring, the BMW 3 Series Coupé and the BMW 3 Series Compact eventually followed the sedan – the best-selling model variant in the global market. In addition, BMW designed the high-performance sports sedan BMW M3. The success story of the world's most widely sold premium car began 36 years ago wîth a two-door version.
1975: The first generation.
With the presentation of the first BMW 3 Series in July 1975, BMW opened a new chapter in the history of the automobile. Right from the start, the two-door sedan wîth compact dimensions and a sporty character has its very own distinctiveness. The kidney grille dominates the front end and wîth a length of 4355 mm, a width of 1610 mm and a height of 1380 mm, the new car has a compact but at the same time ‘grown-up' appearance. Track widths of 1364 mm at the front and 1377 mm at the rear provide the car wîth a powerful look. This is complemented by state-of-the-art, sporty suspension technology wîth a McPherson front axle as well as independent wheel suspension on trailing arms and spring struts at the rear.
The car is powered by four-cylinder engines wîth a displacement of 1573, 1766 and 1990 cc respectively. The model designations are 316, 318, 320 and 320i. With the exception of the fuel-injected engine, all power units are designed to run on regular petrol.
An absolute novelty is the interior design wîth a cockpit inclined towards the driver, this remaining a typical feature of the BMW interior for many years.
Only a year later, readers of the trade magazine 'auto, motor und sport' vote the BMW 320 the world's best sedan up to a displacement of two litres. In 1977, the BMW 3 Series features the §egmènt's first six-cylinder engine, the models 320 and 323i being fitted wîth disc brakes all round especially for this purpose.
The BMW 323i in particular soon gains a reputation as a supreme, athletic model, which – wîth a power output of 105 kW/143 bhp – accelerates effortlessly to a speed of 190 km/h. A survey held in 1980 shows: performance, handling and a sporty design are the main reasons for buying a BMW 3 Series. Four out of five customers would buy the car again. In 1981, the millionth BMW 3 Series rolls off the assembly line after just six years of production, making it the most successful BMW of its period.
1982: The second generation.
The new BMW 3 Series reflects advancement and diversity in all respects. A new design, optimised aerodynamics, more space and comfort, higher power output as well as additional body and engine variants. BMW has consistently extended its most successful model range, offering bespoke solutions to suit customer tastes. This generation celebrates the debut of a family-friendly four-door car (1983), the BMW 3 Series Convertible and the BMW M3 sports car (both 1985). Today, the first BMW 3 Series Convertible is a classic car that is extremely popular wîth many fans of the brand. With the attractively styled 1987 touring version, BMW proves that driving fun and high utility value as well as space and functionality need not contradict each other. Furthermore, the first diesel and the first four-wheel drive models are incorporated into the BMW 3 Series. The successful result of this strategy: With more than 2.3 million units sold, sales of the predecessor model is even exceeded by a million.
With the eta six-cylinder engine introduced in 1984, BMW launches a new fuel-saving concept. The 325e is powerful, economical – and clean: the first BMW 3 Series that is available exclusively wîth a catalytic converter. Those responsible demonstrate courage wîth the 324d, the first premium sports sedan based on the 3 Series. In addition, the ultra-powerful 325i makes its debut. As a 325iX, the car is equipped wîth permanent four-wheel drive. The transfer gearbox wîth viscous clutch facilitates the use of ABS, which is fitted as standard on both models. 1989 sees the arrival of the 318is, this being BMW's first production four-cylinder car featuring a four-valve cylinder head.
1990: The third generation.
In 1990, the four-door sedan marks the launch of the third generation. The car boasts a high level of elegance and innovative technology. It has also become significantly larger and more spacious. The two-door version follows in 1992, but this time as an extremely elegant coupé. Just a few months later, BMW adds two further highlights – the new convertible and the new BMW M3. With the BMW 3 Series Compact of 1994, BMW designers succeed in realising yet another conceptual innovation. It appeals predominantly to fans that attach importance to economy, without wishing to forego dynamics and comfort. The tailgate of the 4.21-metre long BMW is a particularly practical feature.
The new six-cylinder models are equipped wîth two camshafts and four valves per combustion chamber. The power units in the coupé version feature for the first time VANOS variable camshaft control, a new technology that enhances the torque curve, lowers fuel consumption and emission levels and allows engineers to increase compression. Two further newcomers are the 325tds featuring a six-cylinder diesel engine including turbocharger and intercooler as well as the first four-cylinder turbo diesel under the bonnet of the 318tds. At the turn of the year 1994/95, BMW also adds a lightweight aluminium crankcase to the six-cylinder engines.
1998: The fourth generation.
May 1998 sees the arrival of the fourth generation of the BMW 3 Series, offering yet a further increase in power, comfort and safety. The new model is four centimetres longer and wider than its predecessor, the interior also having grown accordingly. At the end of 1999, the BMW 3 Series climbs to third place in the registration statistics, something a car in this class has never achieved before.
The brand's first diesel direct injection engine makes its debut in the 320d and the 318i is equipped for the first time wîth two balance shafts. The technically most prominent measure implemented on the six-cylinder petrol engines is the introduction of double VANOS. Along wîth the intake and exhaust camshaft, this fully automatic and infinitely variable adjustment technology provides the engine wîth a ‘beefier' torque curve and further reduced emissions. The power diesel 330d features Common Rail injection for the very first time. In 2001, BMW presents the throttle-free load control system Valvetronic. This technology facilitates variable intake valve lift, thereby increasing power output, whilst simultaneously lowering fuel consumption and emission levels. Only a short time later, Valvetronic goes into large-scale production.
In addition, BMW presents a new four-wheel drive system for the sedan and the touring. BMW xDrive operates without conventional locking, this task being assumed by automatic, wheel-selective brake intervention instead. A further new feature is the fully flexible distribution of power between the front and rear drive wheels. Moreover, fourth-generation trendsetters include the BMW 3 Series Coupé and the 3 Series Convertible, which are now available wîth a diesel engine and cleverly combine driving fun, styling and practicability.
2005: The fifth generation.
The fifth and latest generation of the BMW 3 Series celebrates its world premiere at the Geneva International Motor Show. The new combination of powerful engines, dynamic and refined handling characteristics, a distinctive design and innovative equipment features is well received all over the world. The BMW Efficient Dynamics development strategy is now demonstrating how the pleasure of driving a BMW 3 Series can be brought into line wîth exemplary fuel economy and low emission levels.
For example, all petrol engines feature direct injection technology High Precision Injection, which is utilised in the six-cylinder models 330i and 325i and in the four-cylinder versions 320i and 318i in fuel-efficient lean-burn operation. In the BMW 335i, the injection system is combined wîth TwinPower Turbo technology and fully variable valve control Valvetronic. In order to optimise weight, BMW utilises an aluminium crankcase or an even lighter magnesium-aluminium composite.
In the model year 2010, all engines fulfil the EÚ5 emission standard. The BMW 320d EfficientDynamics Edition proves to be by far the most efficient medium-class car.
The Common Rail direct injection engine of the third generation delivers 120 kW/163 bhp wîth an average fuel consumption of only 4.1 litres of diesel per 100 km in the EÚ test cycle. The CO2 emission level is around 109 grams per kilometre. Finally, all current BMW 3 Series models benefit from brake energy regeneration, the four-cylinder models wîth manual transmission also having an Auto Start Stop function.
During the course of the past 36 years, BMW has constantly continued to extend its lead in the midrange sports §egmènt. The BMW 3 Series displays its sporting origins in various variants and performance classes more convincingly than any other vehicle in its class. At the same time, BMW again and again proves to be an innovative trendsetter and forerunner, not only wîth engines and drive technology. The success story will continue as the sixth generation will soon be in the starting blocks.
So it is only a matter of time before the BMW 3 Series sets the next sales record of at least 13 million units…..
BMW 3 Series sedan engines: fascinating drive technology spanning five vehicle generations. In 1975, the sporty midrange BMW 3 Series established a new vehicle category. Innovative engines rendered it a forerunner for state-of-the-art technology.For 36 years now, the BMW 3 Series has profited more than almost any other model series from its fascinating drive technology. During a period spanning five generations, BMW 3 Series engines have time and time again been pioneers of innovative technology and milestones in engine construction. As a result, the four and six-cylinder power units, each of them having been the most modern of their time, have created the basis for the success of the internationally coveted, sporty midrange series. And what's more: wîth its dynamic and consistently highly efficient drive technology, the BMW 3 Series became the founder of a new category of sports-oriented vehicles and, at the same time, a bestseller within the premium §egmènt. With each new model, the series was able to expand this position even as more and more competitors began to adopt the concept of sporty, compact premium §egmènt sedans.
In addition to excellent handling and thanks to coherent rear-wheel drive technology and §teering free from negative influences, the character of the BMW 3 Series is marked by powerful and superior engine technology. Right from the very beginning in 1975, the four-cylinder engines, followed by the six-cylinder versions in 1977, offered a maximum level of efficiency, i.e. high performance coupled wîth low fuel consumption. Since the model year 2008, these positive engine characteristics have been bundled under the term BMW Efficient Dynamics and enhanced even further. With the help of this technology, all currently available BMW 3 Series engines attain an outstanding position within the competitive environment.
In the beginning there was the powerful four-cylinder engine.
The first BMW 3 Series models launched in 1975 initially featured four-cylinder petrol engines. All model variants – BMW 316, BMW 318, BMW 320 and BMW 320i – offered enthralling and fascinatingly powerful dynamics. The BMW 320i's power unit featuring fuel injection technology and 92 kW/125 hp delivered the highest power output amongst this generation of engines. At that time, readers of Europe's most widely read car magazine immediately voted the top-of-the-range model BMW 320i the 'the world's best sedan' in the category up to two litres.
From 1977 wîth six cylinders: BMW 320/6 and BMW 323i. With completely newly devised six-cylinder engines, the BMW 320/6 and the new top-of-the-range model BMW 323i crowned the series from 1977. Both models convinced not only through performance alone (BMW 323i wîth electronically controlled engine management and transistor ignition, 105 kW/143 hp), but also through elasticity and running smoothness. With a compact construction and exemplary fuel economy, the in-line six-cylinder power unit was seen as a role model. During the late seventies, the BMW 323i enjoyed cult status wîth sports oriented drivers. Tuners, fitters and conversion specialists alike were in great demand and virtually all suppliers were involved wîth this BMW 3 Series top model. Along wîth the revised four-cylinder engines, a new entry-level model, the BMW 315 wîth 55 kW/75 hp, was added to the range during the second half of the life cycle.
BMW 3 Series, second generation: sporting performance and now diesel-powered.
Even the entry-level model of the second generation launched in 1982, the four-cylinder BMW 316 wîth 66 kW/90 hp and electronically controlled carburettor, signalised a sporting ambition. The two six-cylinder variants boasted electronically controlled fuel injection technology. The top-of-the-range model BMW 323i wîth 102 kW/139 hp offered superior performance and, thanks to a five-speed transmission wîth overdrive characteristics, achieved an average fuel consumption of 8.9 litres/100 km. BMW engineers also took a sporting approach in terms of fuel economy. In 1984, they presented the new eta six-cylinder engine, which was uncompromisingly oriented towards torque and economy. The BMW 325e delivered 90 kW/122 hp from a 2.7-litre displacement and made do wîth a modest 8.4 litres of regular petrol per 100 km. Furthermore, it was the first BMW 3 Series model to be supplied exclusively wîth a catalytic converter. With the BMW 325e, a further world-exclusive new development was incorporated into the BMW 3 Series – digital engine electronics. This technology optimises fuel injection and mixture preparation. The sensor-controlled system – already employed by BMW in motor racing as early as in 1979 – resulted in previously unmatched running smoothness, also permitting, among other things, overrun fuel cut-off.
1985 saw the arrival of the first diesel powered BMW 3 Series, the BMW 324d, its 63 kW/86 hp six-cylinder in-line engine combining athletic driving performance uncharacteristic of a diesel wîth typical diesel fuel consumption of less than 7.0 l/100 km. Thanks to digital diesel electronics technology (electronically controlled fuel injection) introduced a short while later, it was possible to enhance the performance, comfort and fuel economy of the BMW 3 Series sedan even further. 1985 was also the year of birth of the BMW 3 Series' most high-performing engine: The BMW M3, the racing version of which was to become the most successful touring car of all time, was powered by a 147 kW/200 hp 2.3-litre 4-valve engine.
Third generation: high performance, lower fuel consumption and VANOS.
When the third generation of the BMW 3 Series was introduced at the end of 1990, the new six-cylinder engines featured two camshafts and 4-valve technology. Later, the variable camshaft adjustment VANOS was introduced to the BMW 3 Series, enhancing the torque curve and fuel economy. A further new six-cylinder engine made its debut in the sedan – the 2.5-litre, 85 kW/115 hp power unit featured in the BMW 325td, which took the series of victories of the sports diesel to the next highlight in 1993: Únder the bonnet of the 325tds, a new six-cylinder oil burner wîth turbocharging and intercooler delivered a power output of 105 kW/143 hp and acceleration from 0 to 100 km/h in 10.4 seconds. In 1995, the housing of the six-cylinder engines was changed from grey cast iron to aluminium. The BMW 328i wîth 142 kW/193 hp assumed the role as the top-of-the-range model – wîth a fuel consumption of 8.5 l/100 km, a modest result for this power output, it performed impressively also within the competitive environment.
Even better efficiency in the fourth generation.
In the fourth generation of the BMW 3 Series, the BMW 320d made its debut as the first BMW diesel to feature direct fuel injection. It delivered 100 kW/136 hp and reached a top speed of 207 km/h wîth an average fuel consumption of just 5.7 l/100 km. The most significant innovation on the six-cylinder petrol engines was Double VANOS, which offered a beefier torque curve, as it was now possible to optimally adapt gas exchange and combustion to engine speed and load across the entire speed range. From the model year 2000, three six-cylinder petrol engines were available for the BMW 3 Series sedan. (concept carz) The BMW 320i remained in the range, the BMW 325i and the BMW 330i being added, the latter as a successor to the BMW 328i. This car's 170 kW/231 hp 3-litre engine set the new benchmark in terms of elasticity, immense power output, running smoothness and efficiency – a milestone, as was the engine of the BMW 328i before it. The diesel was also consistently improved: The construction principle used on the new six-cylinder in the BMW 330d wîth 135 kW/184 hp and 4-valve technology, direct fuel injection, turbocharger wîth variable turbine geometry and intercooler corresponded largely to that of the four-cylinder engine employed in the BMW 320d. With Common Rail Injection BMW was early in utilising the technology that to this very day has ensured the optimal power delivery and running smoothness of diesel engines. With an average fuel consumption of 6.7 litres/100 km according to the EÚ standard, the BMW 330d was able to reach a top speed of up to 227 km/h, which was fast for a diesel of that time.
The VALVETRONIC technology introduced by BMW in 2001 was soon also to be utilised on the engines featured in the BMW 3 Series sedan. (concept carz) This fully variable control of the intake valves has proven to this day to be a particularly effective measure for increasing power output and optimising fuel economy.
Generation 5: even higher performance, even better fuel economy.
When launched on the market in 2005, the sedan was available in the versions BMW 330i, BMW 325i, BMW 320i and BMW 320d. Both the petrol and diesel engines again offered path-breaking innovations. The four-cylinder oil burner in the BMW 320d wîth new Common Rail Injection of the second generation and a turbocharger wîth variable turbine geometry now delivered 120 kW/163 hp. Like the 110 kW/150 hp four-cylinder power unit, both six-cylinder petrol engines were now equipped wîth the throttle-free load control VALVETRONIC. With 190 kW/258 hp and 160 kW/218 hp power output in the BMW 330i and the BMW 325i respectively, they offered superior BMW six-cylinder dynamics in two stages. Moreover, they featured a further path-breaking innovation – the world's first magnesium-aluminium composite crankcase to be utilised on volume-production engines. This engine weighed only 161 kilograms.
The world's first in-line six-cylinder wîth BMW TwinPower Turbo technology, High Precision Injection and all-aluminium crankcase initially employed in the BMW 335i Coupé from 2007, was also featured in the sedan somewhat later. With 225 kW/306 hp from a three-litre displacement, it has since then offered a new dimension in driving dynamics, pulling power equal to an eight-cylinder naturally aspirated engine and remarkable efficiency, which is unsurpassed in this performance class. The fuel supply is effected using High Precision Injection technology, a second-generation direct injection system presented by BMW for the first time. The piezo injectors are located between the valves and are therefore in the immediate vicinity of the spark plugs, thus facilitating more efficient mixture preparation and combustion.
The BMW current BMW 3 Series sedan: thanks to BMW EfficientDynamics each one a benchmark in its performance class.
The engine range for the current BMW 3 Series sedan – from the BMW 316d wîth 85 kW/115 hp and the BMW 318i wîth 105 kW/143 hp to the BMW 335i – offers efficient dynamics and previously unequalled product diversity. Every BMW 3 Series sedan is the benchmark in its performance class when it comes to the best relation between driving fun and fuel economy. Únder the term BMW EfficientDynamics new chapters in engine development are being constantly opened. The latest outstanding milestone is known as the BMW 320d EfficientDynamics Edition and delivers120 kW/163 hp wîth an average fuel consumption of just 4.1 l/100 km.Source - BMW
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