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Home›Duel›Porsche Panamera vs BMW 840i

Performance comparison

Porsche Panamera S Hybrid 970.1 vs BMW 840i Convertible 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.

PorschePetrol

Panamera S Hybrid 970.1

385 hp · 580 Nm · 1,980 kg · 2013

VS
BMWPetrolFaster

840i Convertible G15

340 hp · 500 Nm · 1,830 kg · 2020

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 S Hybrid 970.1840i Convertible G15
0–100 km/h5,87 s5,36 s+0,51 s
400 m standing start14,15 s13,59 s+0,56 s
1,000 m standing start25,89 s24,56 s+1,33 s
Top speed (electronically limited)254 km/h+4 km/h250 km/h
Power-to-weight ratio5,14 kg/hpbetter ratio5,38 kg/hp

Watch the race

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

PorschePetrolPanamera S Hybrid 970.1
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol840i Convertible 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 S Hybrid 970.1840i Convertible G15
0–30 km/h1,34 s1,40 stight gap
0–50 km/h2,24 s2,33 stight gap
0–80 km/h4,17 s3,91 s
0–100 km/h5,87 s5,36 s
0–120 km/h8,06 s7,12 s
0–160 km/h14,28 s11,98 s
0–200 km/h25,17 s19,49 s
400 m standing start14,15 s13,59 s
1,000 m standing start25,89 s24,56 s
Top speed limited254 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 S Hybrid 970.1

5,14kg/hpratio better by 0,24 kg/hp
CharacteristicValueDetail
Power385 hpAluminum block and heads
Torque580 Nm
Weight1 980 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxTORQUE_CONVERTER
BMW

840i Convertible G15

5,38kg/hpcompensated by −150 kg
CharacteristicValueDetail
Power340 hp6 cyl
Torque500 Nm
Weight1 830 kgmanufacturer kerb weight
Drivetrain840i Convertible
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the Bmw 840i Convertible hits 100 km/h in 5.36 s versus 5.87 s for the Panamera S Hybrid. At this point, the Bmw 840i Convertible leads by 0.51 s and sits roughly 2 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Bmw 840i Convertible is doing 137 km/h against 130 km/h for the Panamera S Hybrid. The gap is 0.28 s. The challenger starts to claw back ground.

At 400 metres standing start, the Bmw 840i Convertible crosses the line in 13.59 s versus 14.14 s. The 0.56 s gap represents roughly 24 m of track — two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Bmw 840i Convertible continues to build its lead. At 600 metres, it runs at 191 km/h versus 180 km/h. At 1,000 metres, the Bmw 840i Convertible finishes in 24.56 s versus 25.88 s, with a 1.33 s lead. Both vehicles have similar top speeds (254 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 S Hybrid is capped at 270 km/h, the Bmw 840i Convertible 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 (5.14 kg/hp vs 5.38 kg/hp) and transmission (Unknown vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 9.25 seconds. The 0.51 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 Hybrid 970.1
Bmw M550d xDrive TouringAudi A6 Avant TFSI quattro S tronic 270 kWBmw M340i xDrive Touring
Instead of 840i Convertible G15
Porsche 911 Carrera 4S CabrioletPorsche 911 Carrera S CabrioletPorsche 911 Carrera Cabriolet

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Frequently asked questions

Sur 0–100 km/h, 840i Convertible G15 gagne (5,36 s vs 5,87 s).

Panamera S Hybrid 970.1 passe de 0 à 100 km/h en 5,87 secondes (simulation calibrée).

Panamera S Hybrid 970.1 : 385 hp, ratio 5,14 kg/hp. 840i Convertible G15 : 340 hp, ratio 5,38 kg/hp.

Panamera S Hybrid 970.1 : 254 km/h. 840i Convertible G15 : 250 km/h.