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Home›Duel›BMW M235i vs BMW 120i

Performance comparison

BMW M235i xDrive F44 vs BMW 120i F20LCI: which is truly faster?

Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.

BMWPetrolFaster

M235i xDrive F44

306 hp · 450 Nm · 1,570 kg · 2019

VS
BMWPetrol

120i F20LCI

184 hp · 270 Nm · 1,375 kg · 2018

MotorwayRange & chargingPerformance0-100, top speedConsumptionAnnual TCO

Parameters and assumptions

Simulation

Start
Standing, straight line
Surface
Dry asphalt, 23°C
Wind
None
Driver
1 person, 75 kg

Calibration

Splits
0–100, 0–200 manufacturer
Power curve
Real measurement (Caralogy)
VMax
Manufacturer limited
Transmission
Losses integrated in model

Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.

M235i xDrive F44120i F20LCI
0–100 km/h4,83 s−2,29 s7,12 s
400 m standing start13,03 s−2,19 s15,22 s
1,000 m standing start23,53 s−4,00 s27,53 s
Top speed (electronically limited)250 km/h+25 km/h225 km/h
Power-to-weight ratio5,13 kg/hpbetter ratio7,47 kg/hp

Watch the race

Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.

BMWPetrolM235i xDrive F44
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol120i F20LCI
Speed
0km/h
Timer
0,00s
Distance
0m
100 m
200 m
300 m
400 m
500 m
600 m
700 m
800 m
900 m
1000 m
0m → 1000m
Gap0m

Stage-by-stage comparison

Simulated performance at each stage. Winner in green.

PalierM235i xDrive F44120i F20LCI
0–30 km/h1,38 s1,79 s
0–50 km/h2,25 s2,99 s
0–80 km/h3,63 s5,16 s
0–100 km/h4,83 s7,12 s
0–120 km/h6,35 s9,70 s
0–160 km/h10,47 s16,79 s
0–200 km/h16,77 s29,61 s
400 m standing start13,03 s15,22 s
1,000 m standing start23,53 s27,53 s
Top speed limited250 km/h225 km/h

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

BMW

M235i xDrive F44

5,13kg/hpratio better by 2,34 kg/hp
CharacteristicValueDetail
Power306 hpPending
Torque450 Nm
Weight1 570 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed Steptronic Sport transmission
BMW

120i F20LCI

7,47kg/hpcompensated by −195 kg
CharacteristicValueDetail
Power184 hp4 cyl
Torque270 Nm
Weight1 375 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the Bmw M235i xDrive hits 100 km/h in 4.83 s versus 7.12 s for the Bmw 120i. At this point, the Bmw M235i xDrive leads by 2.29 s and sits roughly 17 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Bmw M235i xDrive is doing 144 km/h against 122 km/h for the Bmw 120i. The gap is 1.41 s. The challenger starts to claw back ground.

At 400 metres standing start, the Bmw M235i xDrive crosses the line in 13.03 s versus 15.22 s. The 2.19 s gap represents roughly 90 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Bmw M235i xDrive continues to build its lead. At 600 metres, it runs at 200 km/h versus 170 km/h. At 1,000 metres, the Bmw M235i xDrive finishes in 23.52 s versus 27.52 s, with a 4.00 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Bmw M235i xDrive is capped at 250 (i.e. 155 mph - industry threshold) km/h, the Bmw 120i at 225 km/h. This isn’t a physical engine limit - it’s a manufacturer choice, usually for tyre safety or homologation reasons. Neither car reaches its true aerodynamic top speed.

With two combustion powertrains, the difference comes down to power-to-weight ratio (5.13 kg/hp vs 7.47 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.27 seconds. The 2.29 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

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Frequently asked questions

Over 0–100 km/h, M235i xDrive F44 wins (4,83 s vs 7,12 s).

M235i xDrive F44 goes from 0 to 100 km/h in 4,83 seconds (calibrated simulation).

M235i xDrive F44: 306 hp, ratio 5,13 kg/hp. 120i F20LCI: 184 hp, ratio 7,47 kg/hp.

M235i xDrive F44: 250 km/h. 120i F20LCI: 225 km/h.