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APanamera 4PetrolvsB840dDiesel
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  • PerformancePerformance0-100, top speed
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  • SpecsPanamera 4 · 840d

Porsche Panamera 4 vs BMW 840d xDrive G15: 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.

limousine · 2018 vs 2018 · Methodology
PorschePetrol

Panamera 4

330 hp · 449 Nm · 2,008 kg · 2018

VS
BMWDieselFaster

840d xDrive G15

320 hp · 680 Nm · 1,830 kg · 2018

Result · 0–100 km/h

APorsche Panamera 4

5.45 s

Gap0.49 sin favour of 840d xDrive
BBMW 840d xDrive G15

4.96 s

Summary · Caralogy simulation
MeasurePanamera 4840d xDrive G15Gap
0–100 km/h5.45 s4.96 s0.49 s · 840d xDrive G15
400 m standing start13.78 s13.27 s0.51 s · 840d xDrive G15
1,000 m standing start25.22 s24.14 s1.08 s · 840d xDrive G15
Top speed (electronically limited)257 km/h250 km/h7 km/h · Panamera 4
Power-to-weight ratio6.08 kg/hp5.72 kg/hpbetter ratio · 840d xDrive G15

Watch the race

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

PorschePetrolPanamera 4
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel840d xDrive G15
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.
StagePanamera 4840d xDrive G15
0–30 km/h1.27 s · tight gap1.31 s
0–50 km/h2.16 s2.10 s · tight gap
0–80 km/h3.90 s3.58 s
0–100 km/h5.45 s4.96 s
0–120 km/h7.52 s6.70 s
0–160 km/h13.02 s11.43 s
0–200 km/h22.27 s18.72 s
400 m standing start13.78 s13.27 s
1,000 m standing start25.22 s24.14 s
Top speed limited257 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.

Porsche

Panamera 4

6,08kg/hpcompensated by −178 kg
CharacteristicValueDetail
Power330 hpV6
Torque449 Nm
Weight2 008 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxDUAL_CLUTCH
BMW

840d xDrive G15

5,72kg/hpratio better by 0,37 kg/hp
CharacteristicValueDetail
Power320 hpPending
Torque680 Nm
Weight1 830 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the 840d xDrive hits 100 km/h in 4.96 s versus 5.45 s for the Panamera 4. At this point, the 840d xDrive leads by 0.49 s and sits roughly 3 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 840d xDrive is doing 139 km/h against 132 km/h for the Panamera 4. The gap is 0.29 s. The challenger starts to claw back ground.

At 400 metres standing start, the 840d xDrive crosses the line in 13.26 s versus 13.78 s. The 0.52 s gap represents roughly 23 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 840d xDrive continues to build its lead. At 600 metres, it runs at 193 km/h versus 184 km/h. At 1,000 metres, the 840d xDrive finishes in 24.13 s versus 25.22 s, with a 1.09 s lead. Both vehicles have similar top speeds (257 vs 250 (i.e. 155 mph - industry threshold) km/h), preventing any comeback.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Panamera 4 is capped at 257 km/h, the 840d xDrive at 250 (i.e. 155 mph - industry threshold) 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 (6.08 kg/hp vs 5.72 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.74 seconds. The 0.49 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 Panamera 4
Porsche Panamera
Instead of 840d xDrive G15
BMW 840i Gran CoupeBMW 840i xDriveBMW 840i xDrive

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Frequently asked questions

Over 0–100 km/h, 840d xDrive G15 wins (4,96 s vs 5,45 s).

Panamera 4 goes from 0 to 100 km/h in 5,45 seconds (calibrated simulation).

Panamera 4: 330 hp, ratio 6,08 kg/hp. 840d xDrive G15: 320 hp, ratio 5,72 kg/hp.

Panamera 4: 257 km/h. 840d xDrive G15: 250 km/h.