BMW 328i Engine

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When we think of the Ultimate Driving Machine, it’s usually the BMW 3 Series that comes to mind. Historically BMW’s most prolific model, the 3 Series combines power, handling, luxury, and versatility unlike any other vehicle.

There have been many models of the 3 Series, but the sweet spot has always been the 328i model. Produced during E36, E46, E90 and F30 generations, each generation has improved upon its predecessor. The nameplate “328” is a historic one from BMW’s past, belonging to a sports car made from 1936 until 1940.

Regardless of the year and engine, BMW gives you the choice of an automatic or manual, with rear-wheel drive as standard, and all-wheel drive as an upgradable option in later years.

BMW E36 328i (1995-1998)

Produced from 1995 until 1998, BMW’s E36 328i came equipped with the M52 engine, which was an updated version from the car it replaced; the 325i. Available in sedan, coupe and convertible body styles, the E36 features classic BMW styling proportions in any configuration.

The 328i was BMW’s most powerful 3 Series that didn’t involve the letters “M3”. It featured 190 horsepower and 207 lb.-ft. of torque from its naturally aspirated inline-6 cylinder.

M52 engines should be considered vintage at this point, so check it over carefully if you’re considering purchasing an E36 328i.

BMW E46 328i (1998-2000)

A short production run was in store for BMW’s famed E46 generation 3 Series. Produced as a coupe and sedan (the wagon came only with a smaller engine, based 323i), the 328i was powered by an updated version of BMW’s M52 engine.

Producing 190 horsepower, the M52TU (or Technical Update) debuted in 1998 with the E46, and included double-VANOS for improved low rpm torque.

These engines were reliable, but if you’re in the market for one, it’ll most likely have higher mileage on it. Check for radiator & expansion tank leaks, possible water pump failure, a rough idle from the idle control valve, any valve cover cracks & oil leak, pr dual-VANOS failure.

The 328i and its M52 engine were updated in 2000 to become the 330i. BMW replaced the engine with the higher-powered M54, effectively ending production of the 328i nameplate until 2006.

BMW E90 328i (2006-2013)

Growing larger and more luxurious than its predecessor, the BMW E90 generation saw the installation of the all-new N52 inline-6 cylinder engine. Listed on Ward’s 10 Best engines for 2006 and 2007, the N52 was BMW’s last naturally aspirated 6-cylinder engine produced in the United States. Available as a sedan, coupe, wagon and folding hardtop convertible, the E90 boasted more versatility compared to prior generations.

Advancement included double-VANOS variable valve timing, an electric water pump and a lighter engine block compared to the M54, thanks to the use of a magnesium alloy. Power was rated at 230 horsepower, with 200 lb.-ft. of torque.

A stout engine, the N52 had few trouble spots. BMW recalled some 740,000 engines in 2017 due to crankcase ventilation valve short-circuiting and causing a fire.4

With an emphasis on reduced emissions and increased torque, BMW opted to replace all of its naturally aspirated engines with turbocharged ones. The E90 generation was the last 3 Series sold without one.5

BMW F30 328i (2011-2015)

The last generation available with the 328i moniker, the sixth generation of BMW’s 3 Series saw the naturally aspirated inline-6 N52 engine get replaced with the turbocharged 4-cylinder N20. Available as a sedan, Grand Touring hatchback, and wagon, the 3 Series Coupe and Convertible became the 4 Series. The 428i is a mechanical twin to its 3 Series brethren.

Aside from the twin-scroll turbocharger, the N20 got direct fuel injection instead of port, for greater efficiency. It also received double-VANOS and variable valve lift, automatic stop-start, and an electric water pump. Smooth and refined, it place in Ward’s Top 10 Engines in 2012. Power was rated at 240 horsepower, with 258 lb.-ft. of torque.

There are some trouble issues, the biggest being a class action lawsuit against BMW for many early production N20 engines. Faulty plastic timing chain guides were known to fail and cause catastrophic engine failure. Also, as with any direct injection engine, carbon buildup around the valves could lead to decreased engine power and efficiency.6

The 328i was last sold in 2015. During the F30’s LCI, or Lift Cycle Impulse, the 328i became the 330i, and received an all-new engine called the B48. An improvement on its predecessor, the B48 follows BMW’s modular engine family of 3-,4-, and 6-cylinder engines.

BMW G20 330i (2019-current)

The current 3 Series continues to do away with the 328i moniker, instead using the 330i name. Utilizing the same B48 turbocharged 4 cylinder engine as the previous 330i, it once again grows in size and refinement. If you’re in the market for a new 3 Series, the 330i fills the shoes of the 328 name well.

Which 328i is Right for You?

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As always, consider a pre-purchase inspection on any used car, especially on one with higher mileage, along with a VIN check to show any prior accidents or major damage. The BMW community is a large one, and clubs like the BMW CCA can be e a great resource during ownership. The 328i name has sometimes represented the entry-level 3 Series, and sometimes a more powerful version. Regardless of the engine, it remains the Ultimate Driving Machine.

Photos: DepositPhotos: SurangastockSserdarbasak

Owner Reviews

accountCircle Ray on December 7, 2021
Rlmarine0@mail.com
I love my 328i but I'm asking when was the last natural aspirated3328iproduced?
avatar Michael D'Ambrosio
Mike D’Ambrosio is an automotive writer and photographer whose work has been featured in multiple publications, including Roundel, Jalopnik, Performance BMW Magazine, and Speedhunters. As a creative director, he’s worked with clients like BMW, MINI, and Jaguar Land Rover. He also maintains the automotive photography blog MachinesWithSouls.com.
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