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  • SpecsM850i · Panamera

BMW M850i xDrive G15 vs Porsche Panamera 4S: 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 2011 · Methodology
BMWPetrolFaster

M850i xDrive G15

530 hp · 750 Nm · 1,890 kg · 2018

VS
PorschePetrol

Panamera 4S

440 hp · 550 Nm · 1,860 kg · 2011

Result · 0–100 km/h

ABMW M850i xDrive G15

3.76 s

Gap0.96 sin favour of M850i xDrive
BPorsche Panamera 4S

4.72 s

Summary · Caralogy simulation
MeasureM850i xDrive G15Panamera 4SGap
0–100 km/h3.76 s4.72 s0.96 s · M850i xDrive G15
400 m standing start11.66 s12.88 s1.22 s · M850i xDrive G15
1,000 m standing start20.97 s23.24 s2.27 s · M850i xDrive G15
Top speed (electronically limited)250 km/h290 km/h40 km/h · Panamera 4S
Power-to-weight ratio3.57 kg/hp4.23 kg/hpbetter ratio · M850i xDrive G15

Watch the race

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

BMWPetrolM850i xDrive G15
Speed
0km/h
Timer
0,00s
Distance
0m
PorschePetrolPanamera 4S
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.
StageM850i xDrive G15Panamera 4S
0–30 km/h1.13 s1.29 s
0–50 km/h1.85 s2.13 s
0–80 km/h2.92 s3.50 s
0–100 km/h3.76 s4.72 s
0–120 km/h4.79 s6.16 s
0–160 km/h7.55 s10.17 s
0–200 km/h11.52 s16.23 s
400 m standing start11.66 s12.88 s
1,000 m standing start20.97 s23.24 s
Top speed limited250 km/h290 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

M850i xDrive G15

3,57kg/hpratio better by 0,66 kg/hp
CharacteristicValueDetail
Power530 hpPending
Torque750 Nm
Weight1 890 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed Steptronic transmission
Porsche

Panamera 4S

4,23kg/hp
CharacteristicValueDetail
Power440 hpV8
Torque550 Nm
Weight1 860 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxDUAL_CLUTCH

The start: 0 to 100 km/h

Off the line, the M850i xDrive hits 100 km/h in 3.76 s versus 4.72 s for the Panamera 4S. At this point, the M850i xDrive leads by 0.96 s and sits roughly 7 m ahead.

From 100 km/h to 400 metres

At 200 metres, the M850i xDrive is doing 162 km/h against 144 km/h for the Panamera 4S. The gap is 0.78 s. The challenger starts to claw back ground.

At 400 metres standing start, the M850i xDrive crosses the line in 11.65 s versus 12.88 s. The 1.23 s gap represents roughly 60 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the M850i xDrive continues to build its lead. At 600 metres, it runs at 226 km/h versus 202 km/h. At 1,000 metres, the M850i xDrive finishes in 20.97 s versus 23.24 s, with a 2.27 s lead. Despite a higher top speed (290 km/h), the Panamera 4S never recovers its launch deficit.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the M850i xDrive is capped at 250 (i.e. 155 mph - industry threshold) km/h, the Panamera 4S at 303 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 (3.57 kg/hp vs 4.23 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.12 seconds. The 0.96 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 4S
Porsche Panamera TurboPorsche Panamera 4SPorsche Panamera 4S

Other duels you might be interested in

PorscheVSBMW

Panamera Turbo vs M850i xDrive

PorscheVSBMW

Panamera 4S vs 750Ld xDrive

PorscheVSBMW

Panamera Turbo vs M850i xDrive

BMWVSPorsche

750i xDrive vs Panamera 4S

Frequently asked questions

Over 0–100 km/h, M850i xDrive G15 wins (3,76 s vs 4,72 s).

M850i xDrive G15 goes from 0 to 100 km/h in 3,76 seconds (calibrated simulation).

M850i xDrive G15: 530 hp, ratio 3,57 kg/hp. Panamera 4S: 440 hp, ratio 4,23 kg/hp.

M850i xDrive G15: 250 km/h. Panamera 4S: 290 km/h.