# 2012 Subaru WRX vs 2021 BMW M340i — which turbo sedan wins a simulated drag race? Two very different interpretations of the turbocharged sports sedan go head to head here. The 2012 Subaru WRX is a compact, all-wheel-drive machine built around grip and launch tenacity, while the 2021 BMW M340i brings a newer, more powerful straight-six and a far more modern platform to the table. Using DragGap's simulated race model, we estimate how these two line up across a standing kilometre, from the sprint to 100 km/h through to the quarter-mile and the finish line. Every performance figure in this article is the output of a modelled drag simulation, not an instrumented or real-world test. Published: 2026-08-23 ## DragGap comparison data | Result | 2012 Subaru WRX | 2021 BMW M340i | |---|---:|---:| | Rated power | 227 kW | 285 kW | | Horsepower | 305 hp | 382 hp | | Mass | 1535 kg | 1770 kg | | 0–60 mph | 4.71 s | 3.88 s | | 0–100 km/h | 4.90 s | 4.12 s | | 1/4 mile | 13.312 s | 12.627 s | | 1 km | 24.956 s | 23.242 s | ## The two contenders The 2012 Subaru WRX is a sedan powered by a turbocharged boxer engine that DragGap models at 227 kW (305 horsepower). It weighs around 1535 kg and sends its power to all four wheels through a full-time all-wheel-drive system — a layout famous for strong launches off the line. Its drivetrain, moderate weight and turbocharged delivery make it a punchy, tractable companion on real roads. The 2021 BMW M340i is a far newer and more potent machine. Its straight-six produces roughly 285 kW (382 horsepower), and despite tipping the scales at a heavier 1770 kg, it pairs that output with an advanced AWD system. The M340i represents a generation of cars where outright power and modern launch control have moved the goalposts for performance sedans, and its figures reflect that ambition. ## Specifications at a glance The raw numbers DragGap's model uses for these two sedans explain most of the story before either car is set in motion. The WRX brings 227 kW and 1535 kg of mass, while the M340i counters with 285 kW and 1770 kg. That is a meaningful power advantage for the BMW, though the Subaru gives away a good deal of weight and benefits from the lower mass. Both cars are sedans and both put their drive through all four wheels, so the comparison is about power, weight and torque delivery rather than fundamental layout differences. In a straight-line contest the extra 58 kW in the BMW's favour is the single most influential factor DragGap's simulation carries into the race. ## Sprint and quarter-mile estimates DragGap's model projects the 2021 BMW M340i to reach 100 km/h in around 4.12 seconds, and 60 mph in roughly 3.88 seconds. The 2012 Subaru WRX is estimated at about 4.90 seconds to 100 km/h and 4.71 seconds to 60 mph. On paper the BMW holds a clear advantage out of the hole, despite carrying nearly 235 kg more mass, because its power advantage more than offsets the weight penalty. The gap continues through the quarter-mile. The simulation places the M340i's quarter-mile around 12.63 seconds, while the WRX trails at about 13.31 seconds. Over a full standing kilometre the BMW is estimated at roughly 23.24 seconds compared with the Subaru's 24.96 seconds. Top speed estimates also favour the BMW at around 222 km/h against the WRX's roughly 199 km/h. ## The simulated drag race When DragGap's model runs the full standing kilometre, the result is a decisive win for the 2021 BMW M340i. The simulation has the BMW crossing the finish line with a victory margin of about 1.71 seconds, which translates to a finishing gap of roughly 93.6 metres at the line. That margin is substantial — more than a few car lengths — and it reflects the compounding effect of the BMW's power advantage at every stage of the run. The WRX is quicker than its modest specifications might suggest thanks to its all-wheel drive and lighter body, but it never gets the chance to make the race close. DragGap's model is an estimate of how these two would perform in a controlled drag simulation; it is not the result of an instrumented or real-world test. ## What the gap actually means A 1.71-second margin and roughly 93 metres at the finish is a clear, class-style difference rather than a close contest. The BMW M340i's newer engine, substantially more power and modern launch strategy give it a commanding straight-line edge that the Subaru's lower weight and all-wheel-drive traction cannot fully close. That does not make the WRX a poor car — it remains a lightweight, tractable and characterful all-wheel-drive sedan, and in tighter, twistier environments its 1535 kg mass and eager turbocharged response would be strengths. But in a pure simulated drag race over a kilometre, the 2021 BMW M340i is the clear winner on every performance metric DragGap's model captures. ## Frequently asked questions ### Which car wins a drag race, the 2012 Subaru WRX or the 2021 BMW M340i? In DragGap's simulated model, the 2021 BMW M340i wins, crossing the finish of a standing kilometre roughly 1.71 seconds ahead, a gap of about 93.6 metres. These are simulated estimates, not results from a real instrumented test. ### What are the 0-100 km/h times for these cars? DragGap's model estimates the BMW M340i at about 4.12 seconds to 100 km/h and the Subaru WRX at around 4.90 seconds. ### How do the two cars compare on quarter-mile and top speed? The model places the M340i's quarter-mile near 12.63 seconds and its top speed around 222 km/h, versus the WRX's roughly 13.31-second quarter-mile and approximately 199 km/h top speed. ### Is any of this based on a real-world drag test? No. All acceleration and race figures here are simulated, modelled or estimated outputs from DragGap's performance model. No instrumented or real-world drag test was performed. ## Sources and method - [U.S. EPA FuelEconomy.gov](https://www.fueleconomy.gov/feg/ws/index.shtml) - [NHTSA vPIC](https://vpic.nhtsa.dot.gov/api/) - [Open Vehicle Specs (ODbL 1.0)](https://github.com/gor3a/vehicle-makes-models) - [DragGap methodology](https://draggap.com/methodology/) Winner field supplied by the simulator: BMW M340i. All performance outputs are simulated estimates, not instrumented measurements.