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AM550dDieselvsB540iPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsM550d · 540i

BMW M550d xDrive Touring G30 vs BMW 540i G30: 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 2018 · Methodology
BMWDieselFaster

M550d xDrive Touring G30

400 hp · 760 Nm · 1,955 kg · 2018

VS
BMWPetrol

540i G30

340 hp · 450 Nm · 1,595 kg · 2018

Result · 0–100 km/h

ABMW M550d xDrive Touring G30

4.55 s

Gap0.50 sin favour of M550d xDrive Touring
BBMW 540i G30

5.06 s

Summary · Caralogy simulation
MeasureM550d xDrive Touring G30540i G30Gap
0–100 km/h4.55 s5.06 s0.50 s · M550d xDrive Touring G30
400 m standing start12.82 s13.21 s0.39 s · M550d xDrive Touring G30
1,000 m standing start23.34 s23.70 s0.36 s · M550d xDrive Touring G30
Top speed (electronically limited)250 km/h250 km/hSame
Power-to-weight ratio4.89 kg/hp4.69 kg/hpbetter ratio · 540i G30

Watch the race

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

BMWDieselM550d xDrive Touring G30
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol540i G30
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.
StageM550d xDrive Touring G30540i G30
0–30 km/h1.18 s1.43 s
0–50 km/h1.96 s2.38 s
0–80 km/h3.33 s3.82 s
0–100 km/h4.55 s5.06 s
0–120 km/h6.12 s6.59 s
0–160 km/h10.37 s10.74 s
0–200 km/h16.69 s16.99 s
400 m standing start12.82 s13.21 s
1,000 m standing start23.34 s23.70 s
Top speed limited250 km/h250 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

M550d xDrive Touring G30

4,89kg/hpcompensated by −360 kg
CharacteristicValueDetail
Power400 hp6 cyl
Torque760 Nm
Weight1 955 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic
BMW

540i G30

4,69kg/hpratio better by 0,20 kg/hp
CharacteristicValueDetail
Power340 hp6 cyl
Torque450 Nm
Weight1 595 kgmanufacturer kerb weight
DrivetrainPropulsion
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the M550d xDrive Touring hits 100 km/h in 4.56 s versus 5.06 s for the 540i. At this point, the M550d xDrive Touring leads by 0.50 s and sits roughly 9 m ahead.

From 100 km/h to 400 metres

At 200 metres, the M550d xDrive Touring is doing 144 km/h against 143 km/h for the 540i. The gap is 0.39 s. The challenger starts to claw back ground.

At 400 metres standing start, the M550d xDrive Touring crosses the line in 12.82 s versus 13.21 s. The 0.39 s gap represents roughly 19 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the M550d xDrive Touring continues to build its lead. At 600 metres, it runs at 200 km/h versus 200 km/h. At 1,000 metres, the M550d xDrive Touring finishes in 23.33 s versus 23.70 s, with a 0.36 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 250 (i.e. 155 mph - industry threshold) km/h), preventing any comeback.

What the numbers don’t tell you

The M550d xDrive Touring features all-wheel drive (AWD) against the 540i’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 share the same electronic speed cap: the M550d xDrive Touring and the 540i are governed to 250 (i.e. 155 mph - industry threshold) km/h. At that speed, standard-fit tyres approach their safety threshold - an industrial ceiling common to most electric vehicles in this segment. Neither car shows its true aerodynamic potential in this duel.

With two combustion powertrains, the difference comes down to power-to-weight ratio (4.89 kg/hp vs 4.69 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.48 seconds. The 0.50 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Compare with other alternatives

Swap one of the two models to explore an equivalent duel in the same segment.

Instead of M550d xDrive Touring G30
Audi A6 Avant TFSI quattro S tronic 270 kW
Instead of 540i G30
Audi A6 Sedan TDI quattro S tronic 220 kW

Other duels you might be interested in

BMWVSAudi

M550d xDrive Touring vs A6 Avant TDI quattro S tronic 220 kW

AudiVSBMW

A6 Avant TFSI quattro S tronic 270 kW vs 540i

BMWVSAudi

M550d xDrive Touring vs A6 Sedan TDI quattro S tronic 220 kW

AudiVSBMW

A6 Sedan TFSI quattro S tronic 270 kW vs 540i

Frequently asked questions

Over 0–100 km/h, M550d xDrive Touring G30 wins (4,55 s vs 5,06 s).

M550d xDrive Touring G30 goes from 0 to 100 km/h in 4,55 seconds (calibrated simulation).

M550d xDrive Touring G30: 400 hp, ratio 4,89 kg/hp. 540i G30: 340 hp, ratio 4,69 kg/hp.

M550d xDrive Touring G30: 250 km/h. 540i G30: 250 km/h.