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  • SpecsPanamera · 840i

Porsche Panamera S vs BMW 840i 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 · 2013 vs 2020 · Methodology
PorschePetrol

Panamera S

406 hp · 500 Nm · 1,800 kg · 2013

VS
BMWPetrolFaster

840i G15

340 hp · 500 Nm · 1,710 kg · 2020

Result · 0–100 km/h

APorsche Panamera S

5.19 s

Gap0.24 sin favour of 840i
BBMW 840i G15

4.95 s

Summary · Caralogy simulation
MeasurePanamera S840i G15Gap
0–100 km/h5.19 s4.95 s0.24 s · 840i G15
400 m standing start13.36 s13.16 s0.20 s · 840i G15
1,000 m standing start24.06 s23.75 s0.31 s · 840i G15
Top speed (electronically limited)276 km/h250 km/h26 km/h · Panamera S
Power-to-weight ratio4.43 kg/hp5.03 kg/hpbetter ratio · Panamera S

Watch the race

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

PorschePetrolPanamera S
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol840i 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 S840i G15
0–30 km/h1.44 s1.33 s · tight gap
0–50 km/h2.38 s2.23 s · tight gap
0–80 km/h3.89 s3.66 s
0–100 km/h5.19 s4.95 s
0–120 km/h6.76 s6.53 s
0–160 km/h11.10 s10.83 s
0–200 km/h18.09 s17.36 s
400 m standing start13.36 s13.16 s
1,000 m standing start24.06 s23.75 s
Top speed limited276 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 S

4,43kg/hpratio better by 0,60 kg/hp
CharacteristicValueDetail
Power406 hpAluminum block and heads
Torque500 Nm
Weight1 800 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxDUAL_CLUTCH
BMW

840i G15

5,03kg/hpcompensated by −90 kg
CharacteristicValueDetail
Power340 hp6 cyl
Torque500 Nm
Weight1 710 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the 840i hits 100 km/h in 4.95 s versus 5.19 s for the Panamera S. At this point, the 840i leads by 0.24 s and sits roughly 4 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 840i is doing 142 km/h against 140 km/h for the Panamera S. The gap is 0.18 s. The gap remains stable from the start.

At 400 metres standing start, the 840i crosses the line in 13.15 s versus 13.35 s. The 0.20 s gap represents roughly 10 m of track - barely a car length.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 840i continues to build its lead. At 600 metres, it runs at 198 km/h versus 196 km/h. At 1,000 metres, the 840i finishes in 23.75 s versus 24.06 s, with a 0.31 s lead. Despite a higher top speed (276 km/h), the Panamera S never recovers its launch deficit.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Panamera S is capped at 282 km/h, the 840i 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 (4.43 kg/hp vs 5.03 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.78 seconds. The 0.24 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 S
Porsche 2013 Panamera GTSPorsche Panamera SPorsche Panamera 4 Sport Turismo
Instead of 840i G15
BMW 840i xDrive

Other duels you might be interested in

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Panamera S vs 750Ld xDrive

BMWVSPorsche

840i vs Panamera

PorscheVSBMW

Panamera S vs 840i Convertible

BMWVSPorsche

840i vs Panamera 4

Frequently asked questions

Over 0–100 km/h, 840i G15 wins (4,95 s vs 5,19 s).

Panamera S goes from 0 to 100 km/h in 5,19 seconds (calibrated simulation).

Panamera S: 406 hp, ratio 4,43 kg/hp. 840i G15: 340 hp, ratio 5,03 kg/hp.

Panamera S: 276 km/h. 840i G15: 250 km/h.