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A540dvsB320dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs540d · 320d

BMW 540d xDrive G30 vs BMW 320d G20: 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.

grand tourer · 2018 vs 2024 · Methodology
BMWDieselFaster

540d xDrive G30

320 hp · 680 Nm · 1,845 kg · 2018

VS
BMWDiesel

320d G20

190 hp · 400 Nm · 1,540 kg · 2024

Result · 0–100 km/h

ABMW 540d xDrive G30

4.98 s

Gap1.97 sin favour of 540d xDrive
BBMW 320d G20

6.95 s

Summary · Caralogy simulation
Measure540d xDrive G30320d G20Gap
0–100 km/h4.98 s6.95 s1.97 s · 540d xDrive G30
400 m standing start13.28 s15.06 s1.78 s · 540d xDrive G30
1,000 m standing start24.19 s27.81 s3.62 s · 540d xDrive G30
Top speed (electronically limited)250 km/h234 km/h16 km/h · 540d xDrive G30
Power-to-weight ratio5.77 kg/hp8.11 kg/hpbetter ratio · 540d xDrive G30

Watch the race

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

BMWDiesel540d xDrive G30
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel320d G20
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. Best value in bold.
Stage540d xDrive G30320d G20
0–30 km/h1.30 s · tight gap1.30 s
0–50 km/h2.10 s2.33 s
0–80 km/h3.60 s4.74 s
0–100 km/h4.98 s6.95 s
0–120 km/h6.71 s9.82 s
0–160 km/h11.48 s18.29 s
0–200 km/h18.90 s34.36 s
400 m standing start13.28 s15.06 s
1,000 m standing start24.19 s27.81 s
Top speed limited250 km/h234 km/h

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

540d xDrive G30

5,77kg/hpratio better by 2,34 kg/hp
CharacteristicValueDetail
Power320 hp6 cyl
Torque680 Nm
Weight1 845 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic
BMW

320d G20

8,11kg/hpcompensated by −305 kg
CharacteristicValueDetail
Power190 hp4 cyl
Torque400 Nm
Weight1 540 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the 540d xDrive hits 100 km/h in 4.98 s versus 6.95 s for the 320d. At this point, the 540d xDrive leads by 1.97 s and sits roughly 10 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 540d xDrive is doing 138 km/h against 119 km/h for the 320d. The gap is 1.02 s. The challenger starts to claw back ground.

At 400 metres standing start, the 540d xDrive crosses the line in 13.28 s versus 15.06 s. The 1.78 s gap represents roughly 71 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 540d xDrive continues to build its lead. At 600 metres, it runs at 193 km/h versus 165 km/h. At 1,000 metres, the 540d xDrive finishes in 24.19 s versus 27.80 s, with a 3.61 s lead.

What the numbers don’t tell you

The 540d xDrive features all-wheel drive (AWD) against the 320d’s RWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.

Both rivals are electronically governed, but not at the same level: the 540d xDrive is capped at 250 (i.e. 155 mph - industry threshold) km/h, the 320d at 235 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 (5.77 kg/hp vs 8.11 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.51 seconds. The 1.97 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, 540d xDrive G30 wins (4,98 s vs 6,95 s).

540d xDrive G30 goes from 0 to 100 km/h in 4,98 seconds (calibrated simulation).

540d xDrive G30: 320 hp, ratio 5,77 kg/hp. 320d G20: 190 hp, ratio 8,11 kg/hp.

540d xDrive G30: 250 km/h. 320d G20: 234 km/h.