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A120dDieselvsB420iPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs120d · 420i

BMW 120d xDrive F20LCI vs BMW 420i F32: 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.

compact · 2018 vs 2020 · Methodology
BMWDiesel

120d xDrive F20LCI

190 hp · 400 Nm · 1,495 kg · 2018

VS
BMWPetrol

420i F32

184 hp · 300 Nm · 1,525 kg · 2020

Donnée constructeur en cours de validation pour ce profil

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.

Under the bonnet

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

BMW

120d xDrive F20LCI

7,87kg/hpratio better by 0,42 kg/hp
CharacteristicValueDetail
Power190 hp4 cyl
Torque400 Nm
Weight1 495 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic
BMW

420i F32

8,29kg/hp
CharacteristicValueDetail
Power184 hp4 cyl
Torque300 Nm
Weight1 525 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

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Frequently asked questions

See the simulation above.

Data not available.

120d xDrive F20LCI: 190 hp, ratio 7,87 kg/hp. 420i F32: 184 hp, ratio 8,29 kg/hp.

120d xDrive F20LCI: 222 km/h. 420i F32: 238 km/h.