Are the BMW 320 and 328 engines the same?

[CamillaRose]

BMW 320 and 328 engines are not the same. Although both cars are equipped with a 2.0T inline 4-cylinder engine, the 320 only has 184 horsepower, while the 328 has 245 horsepower. Therefore, the 328 offers more power, better acceleration, and faster performance. The main differences between the two are as follows: 1. Dimensions: The 320Li measures 462418111455mm with a wheelbase of 2810mm, while the 328Li measures 473418111455mm with a wheelbase of 2920mm. 2. Performance: The 320 is currently the lowest-tier imported 3 Series family sports sedan, with a 0-100 km/h acceleration time of 7.6 seconds. It comes in two versions: the Fashion Edition and the Sport Design Package Edition, which mainly differ in practical configurations. The 328 is divided into the 328I and 328M (not the M3), featuring M3-style kits. The standard 3 Series 328 accelerates from 0-100 km/h in 6.1 seconds, while the 328M does it in 5.9 seconds. The difference lies in the M-level kits, and there is also a hybrid version of the 3 Series.

[EstherFitz]

I recall that in the BMW 3 Series, the engines of the 320 and 328 were indeed the same in some model years, such as the F30 generation of the 2010s. Both used a 2.0-liter turbocharged engine with identical base hardware but different tuning—the 320 produced around 184 horsepower, while the 328 was tuned up to approximately 245 horsepower. The 328 felt noticeably more aggressive in acceleration, delivering stronger push-back sensations. BMW designed it this way to differentiate between the entry-level and sportier versions while saving costs. Shared engines meant similar maintenance, such as oil changes or turbo system inspections following nearly identical procedures. However, in the earlier E90 era (mid-2000s), the 320 had a 2.0-liter naturally aspirated four-cylinder with 150 horsepower, while the 328 featured a 3.0-liter six-cylinder with 230 horsepower—completely different. When buying used, always check the model year and engine code to avoid misjudgment. In daily driving, the 328 consumes slightly more fuel but performs better at high speeds, making it ideal for those who enjoy spirited driving.

[DiWalter]

As a long-time BMW owner, I've found minimal differences between the 320 and 328 engines in daily use, especially since recent models share the same turbocharged unit - the 328 just has higher horsepower tuning. For city commuting, the 320 is more fuel-efficient, averaging 1-2L/100km lower consumption. The 328 shows more power on highways, making overtaking easier. Maintenance costs are similar, using identical oil and filters, though 328 parts like spark plugs may cost more. Both demonstrate good reliability, but turbo systems require regular inspections to prevent carbon buildup. Unless you're a speed enthusiast, the 320 offers better value with cheaper insurance. BMW's engine-sharing strategy enhances eco-efficiency without compromising driving comfort.

[VanessaDella]

Hey, the BMW 320 and 328 engines in the F30 generation are basically the same, both using the B48 turbocharged engine. The hardware is identical, but the 328 comes with higher factory horsepower—about 245 hp compared to the 320's 184 hp. Great tuning potential! With an ECU tune, the 320 can easily match the 328's stock performance. After upgrading the intake, exhaust, or turbo, both models perform similarly. It was different in the E90 era: the 320 had a naturally aspirated four-cylinder, while the 328 had a six-cylinder, leaving less room for tuning. Now, with a unified platform, it's cost-effective and fun. In terms of acceleration, the 328 is about 0.5 seconds quicker off the line, but the shared engine makes maintenance easier, with interchangeable parts. The test drive experience shows a clear difference—the 328 delivers stronger push-back feel.

[GarrettLee]

From experience, the relationship between BMW 320 and 328 engines has evolved: In the E90 generation (2005-2011), the 320 used a 2.0-liter naturally aspirated four-cylinder engine with about 150 horsepower, while the 328 had a 3.0-liter six-cylinder with 230 horsepower—completely different. By the F30 generation (2012-2018), both models adopted the 2.0-liter turbocharged engine, either the N20 or B48, with software tuning differentiating the output: 184 horsepower for the 320 and 245 for the 328. Essentially the same engine, different outputs. The latest G20 generation continues this strategy. This shift stems from BMW's move toward efficient turbo technology to improve fuel economy. The 328 feels more responsive to drive but has slightly higher city fuel consumption. When purchasing, note the model year—E90 variants have significantly different engines and higher maintenance costs.

[OTessa]

From a cost perspective, the BMW 320 and 328 engines in recent model years like the F30 generation are fundamentally the same, both using a 2.0-liter turbocharged engine. However, the 328's higher horsepower output results in a new car price difference of several thousand yuan, slightly more expensive insurance, and about 10% higher fuel consumption. In terms of maintenance, they share many parts, with similar costs for oil changes or filter replacements. The 328 may experience slightly faster wear and tear, and its parts can be a bit more expensive. In the used car market, the 328 holds its value slightly better, but the 320 is more economical, especially for daily commuting. The difference in fuel efficiency is minor, with the 320 being more fuel-efficient in city driving. Both engines have similar reliability, and regular maintenance of the turbo system can prevent issues. Overall, the 320 is suitable for those on a tight budget or who prioritize efficiency, while the 328 is for drivers who seek performance—the choice depends on personal preference.