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Home›Duel›Porsche Panamera vs BMW M850i

Performance comparison

Porsche Panamera Turbo 971 vs BMW M850i 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.

PorschePetrolFaster

Panamera Turbo 971

550 hp · 770 Nm · 1,996 kg · 2018

VS
BMWPetrol

M850i xDrive G15

530 hp · 750 Nm · 1,930 kg · 2021

MotorwayRange & chargingPerformance0-100, top speedConsumptionAnnual TCO

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.

Panamera Turbo 971M850i xDrive G15
0–100 km/h3,54 s−0,29 s3,83 s
400 m standing start11,45 s−0,29 s11,74 s
1,000 m standing start20,67 s−0,42 s21,09 s
Top speed (electronically limited)308 km/h+58 km/h250 km/h
Power-to-weight ratio3,63 kg/hpbetter ratio3,64 kg/hp

Watch the race

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

PorschePetrolPanamera Turbo 971
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrolM850i 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. Winner in green.

PalierPanamera Turbo 971M850i xDrive G15
0–30 km/h1,04 s1,15 stight gap
0–50 km/h1,72 s1,89 s
0–80 km/h2,74 s2,97 s
0–100 km/h3,54 s3,83 s
0–120 km/h4,60 s4,88 s
0–160 km/h7,25 s7,70 s
0–200 km/h11,09 s11,73 s
400 m standing start11,45 s11,74 s
1,000 m standing start20,67 s21,09 s
Top speed limited308 km/h250 km/h

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

Porsche

Panamera Turbo 971

3,63kg/hpratio better by 0,01 kg/hp
CharacteristicValueDetail
Power550 hpV8
Torque770 Nm
Weight1 996 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxDUAL_CLUTCH
BMW

M850i xDrive G15

3,64kg/hpcompensated by −66 kg
CharacteristicValueDetail
Power530 hp8 cyl
Torque750 Nm
Weight1 930 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the Panamera Turbo hits 100 km/h in 3.55 s versus 3.83 s for the Bmw M850i xDrive. At this point, the Panamera Turbo leads by 0.29 s and sits roughly 4 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Panamera Turbo is doing 163 km/h against 161 km/h for the Bmw M850i xDrive. The gap is 0.23 s. The gap remains stable from the start.

At 400 metres standing start, the Panamera Turbo crosses the line in 11.45 s versus 11.74 s. The 0.29 s gap represents roughly 16 m of track — two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Panamera Turbo continues to build its lead. At 600 metres, it runs at 228 km/h versus 225 km/h. At 1,000 metres, the Panamera Turbo finishes in 20.66 s versus 21.08 s, with a 0.42 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Panamera Turbo is capped at 308 km/h, the Bmw M850i 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 (3.63 kg/hp vs 3.64 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.51 seconds. The 0.29 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 Turbo 971
Bmw M5 CSMercedes Maybach S 680Audi S8
Instead of M850i xDrive G15
Ferrari 488 GTBNissan GT-R 570 R35Jaguar F-TYPE R P575

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Frequently asked questions

Sur 0–100 km/h, Panamera Turbo 971 gagne (3,54 s vs 3,83 s).

Panamera Turbo 971 passe de 0 à 100 km/h en 3,54 secondes (simulation calibrée).

Panamera Turbo 971 : 550 hp, ratio 3,63 kg/hp. M850i xDrive G15 : 530 hp, ratio 3,64 kg/hp.

Panamera Turbo 971 : 308 km/h. M850i xDrive G15 : 250 km/h.