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AX5vsB320dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsX5 · 320d

BMW X5 M50d F15 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.

large SUV · 2018 vs 2024 · Methodology
BMWDieselFaster

X5 M50d F15

400 hp · 760 Nm · 2,275 kg · 2018

VS
BMWDiesel

320d G20

190 hp · 400 Nm · 1,540 kg · 2024

Result · 0–100 km/h

ABMW X5 M50d F15

5.15 s

Gap1.80 sin favour of X5 M50d
BBMW 320d G20

6.95 s

Summary · Caralogy simulation
MeasureX5 M50d F15320d G20Gap
0–100 km/h5.15 s6.95 s1.80 s · X5 M50d F15
400 m standing start13.47 s15.06 s1.59 s · X5 M50d F15
1,000 m standing start24.61 s27.81 s3.20 s · X5 M50d F15
Top speed (electronically limited)250 km/h234 km/h16 km/h · X5 M50d F15
Power-to-weight ratio5.69 kg/hp8.11 kg/hpbetter ratio · X5 M50d F15

Watch the race

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

BMWDieselX5 M50d F15
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.
StageX5 M50d F15320d G20
0–30 km/h1.33 s1.30 s · tight gap
0–50 km/h2.15 s2.33 s
0–80 km/h3.71 s4.74 s
0–100 km/h5.15 s6.95 s
0–120 km/h6.95 s9.82 s
0–160 km/h12.03 s18.29 s
0–200 km/h20.34 s34.36 s
400 m standing start13.47 s15.06 s
1,000 m standing start24.61 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

X5 M50d F15

5,69kg/hpratio better by 2,42 kg/hp
CharacteristicValueDetail
Power400 hp6 cyl
Torque760 Nm
Weight2 275 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed Steptronic transmission
BMW

320d G20

8,11kg/hpcompensated by −735 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 X5 M50d hits 100 km/h in 5.15 s versus 6.95 s for the 320d. At this point, the X5 M50d leads by 1.80 s and sits roughly 9 m ahead.

From 100 km/h to 400 metres

At 200 metres, the X5 M50d is doing 136 km/h against 119 km/h for the 320d. The gap is 0.90 s. The challenger starts to claw back ground.

At 400 metres standing start, the X5 M50d crosses the line in 13.47 s versus 15.06 s. The 1.59 s gap represents roughly 63 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the X5 M50d continues to build its lead. At 600 metres, it runs at 189 km/h versus 165 km/h. At 1,000 metres, the X5 M50d finishes in 24.60 s versus 27.80 s, with a 3.20 s lead.

What the numbers don’t tell you

The X5 M50d 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 X5 M50d 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 (5.69 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 1.80 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, X5 M50d F15 wins (5,15 s vs 6,95 s).

X5 M50d F15 goes from 0 to 100 km/h in 5,15 seconds (calibrated simulation).

X5 M50d F15: 400 hp, ratio 5,69 kg/hp. 320d G20: 190 hp, ratio 8,11 kg/hp.

X5 M50d F15: 250 km/h. 320d G20: 234 km/h.