
BMW 3 Series has a 2.0t engine displacement, which refers to the volume of fluid that the engine can intake or exhaust per stroke or cycle. Taking the 2021 BMW 3 Series as an example, its body dimensions are: length 4719mm, width 1827mm, height 1459mm, with a wheelbase of 2851mm and a fuel tank capacity of 59l. The 2021 BMW 3 Series features a double-joint spring strut front suspension and a multi-link independent rear suspension. It is equipped with a turbocharged engine, delivering a maximum horsepower of 156ps, a maximum power of 115kw, and a maximum torque of 250nm, paired with an 8-speed automatic transmission.

From my driving experience, the current BMW 3 Series lineup mainly focuses on the 2.0T displacement as the golden standard. For instance, the 2023 models like 320i and 325i all use 2.0-liter turbocharged engines. However, BMW enjoys playing with power tuning - even with the same 2.0T engine, the 320i delivers 156 horsepower while the 330i jumps straight to 258 horsepower, making them feel like completely different characters in daily driving. Occasionally you might still spot older 316i models with 1.5T three-cylinder engines, but they always feel like they're missing some of that classic rear-wheel-drive BMW essence. As for larger displacements, the pre-2019 F30 generation still had the 3.0T straight-six 340i - just thinking about the engine roar when stomping the throttle still makes my fingers itch.

My friend's newly acquired BMW 325Li left a deep impression on me. The 2.0T displacement paired with 184 horsepower is more than sufficient for daily use. However, if we delve into history, the first-generation E21 3 Series used a 2.0L naturally aspirated engine, and the classic 325i from the E90 era featured a 2.5L inline-six naturally aspirated engine. Nowadays, new models are mostly turbocharged, with even the 330e plug-in hybrid based on a 2.0T engine. I suggest you don't just focus on the badge numbers when looking at cars. For example, the 330i actually still has a 2.0T displacement, but with a more aggressive tune. By the way, the electric motor in the G20 generation hybrid models can provide an additional 88 horsepower of assistance.

Taking the latest model as an example makes it more straightforward: among the current BMW 3 Series main models, from the 320i to the 330i, they all uniformly feature a 2.0T four-cylinder engine. However, the earlier versions differed significantly. For instance, the 2015 316i had a 1.6T, the 328i a high-power 2.0T, and the top-tier 335i a 3.0T. Now, with the entire lineup upgraded to the B48 engine, the displacement is unified, but the output power varies greatly. The 330e plug-in hybrid version still pairs a 2.0T engine with an electric motor system, delivering a combined horsepower of up to 292. When choosing a car, note that the 2.0T displacement can save you several hundred in annual vehicle and vessel tax compared to the 3.0T.


