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Over a standing quarter mile on dry asphalt, the BMW M140i gets there in 12.38 s — 0.72 s ahead of the BMW M135i F20.
Watch the run in full — then change the surface, the weather or the distance and run it again.
| Standing start | BMW M135i F20 | BMW M140i |
|---|---|---|
| 0–60 mph | 4.76 s | 3.90 s |
| 0–100 mph | 11.06 s | 9.72 s |
| 60 ft | 2.00 s | 1.91 s |
| 1/8 mile | 8.49 s | 7.94 s |
| 1/4 mile | 13.10 s | 12.38 s |
| Trap speed | 106.7 mph | 111.0 mph |
Each car is trimmed to its own published figures — 9/10 for the BMW M135i F20, 9/10 for the BMW M140i — so a heavier car can still be the quicker one if that is what it tests.
| Specification | BMW M135i F20 | BMW M140i |
|---|---|---|
| Year | 2012 | 2016 |
| Power | 315 bhp | 335 bhp |
| Kerb mass | 1,440 kg | 1,475 kg |
| Power to weight | 219 bhp/t | 227 bhp/t |
| Drivetrain | Rear drive | Rear drive |
| Engine | Turbocharged | Turbocharged |