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A911vsBS8Petrol
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  • Specs911 · S8

Porsche 911 Turbo S 991.2 vs Audi S8: 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.

sports car · 2017 vs 2025 · Methodology
PorschePetrolFaster

911 Turbo S 991.2

588 hp · 700 Nm · 1,600 kg · 2017

VS
AudiPetrol

S8

571 hp · 800 Nm · 2,220 kg · 2025

Result · 0–100 km/h

APorsche 911 Turbo S 991.2

2.94 s

Gap0.89 sin favour of 911 Turbo S
BAudi S8

3.83 s

Summary · Caralogy simulation
Measure911 Turbo S 991.2S8Gap
0–100 km/h2.94 s3.83 s0.89 s · 911 Turbo S 991.2
400 m standing start10.55 s11.81 s1.26 s · 911 Turbo S 991.2
1,000 m standing start19.15 s21.27 s2.12 s · 911 Turbo S 991.2
Top speed (electronically limited)326 km/h250 km/h76 km/h · 911 Turbo S 991.2
Power-to-weight ratio2.72 kg/hp3.89 kg/hpbetter ratio · 911 Turbo S 991.2

Watch the race

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

PorschePetrol911 Turbo S 991.2
Speed
0km/h
Timer
0,00s
Distance
0m
AudiPetrolS8
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.
Stage911 Turbo S 991.2S8
0–30 km/h0.85 s1.07 s
0–50 km/h1.42 s1.78 s
0–80 km/h2.30 s2.88 s
0–100 km/h2.94 s3.83 s
0–120 km/h3.75 s4.97 s
0–160 km/h5.82 s7.99 s
0–200 km/h8.76 s12.24 s
400 m standing start10.55 s11.81 s
1,000 m standing start19.15 s21.27 s
Top speed limited326 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

911 Turbo S 991.2

2,72kg/hpratio better by 1,17 kg/hp
CharacteristicValueDetail
Power588 hpB6
Torque700 Nm
Weight1 600 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxDUAL_CLUTCH
Audi

S8

3,89kg/hpcompensated by −620 kg
CharacteristicValueDetail
Power571 hpPending
Torque800 Nm
Weight2 220 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed tiptronic

The start: 0 to 100 km/h

Off the line, the 911 Turbo S hits 100 km/h in 2.94 s versus 3.83 s for the S8. At this point, the 911 Turbo S leads by 0.89 s and sits roughly 8 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 911 Turbo S is doing 176 km/h against 157 km/h for the S8. The gap is 0.84 s. The gap remains stable from the start.

At 400 metres standing start, the 911 Turbo S crosses the line in 10.55 s versus 11.81 s. The 1.26 s gap represents roughly 67 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 911 Turbo S continues to build its lead. At 600 metres, it runs at 245 km/h versus 222 km/h. At 1,000 metres, the 911 Turbo S finishes in 19.14 s versus 21.26 s, with a 2.12 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the 911 Turbo S is capped at 330 (i.e. 205 mph - industry threshold) km/h, the S8 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 (2.72 kg/hp vs 3.89 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.62 seconds. The 0.89 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 911 Turbo S 991.2
Porsche Panamera TurboPorsche Panamera Turbo SPorsche Panamera Turbo
Instead of S8
Mercedes Maybach SL 680 Monogram Series

Other duels you might be interested in

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911 Turbo S vs F-TYPE R P575

AudiVSPorsche

S8 vs Panamera Turbo

LamborghiniVSPorsche

Huracán EVO RWD vs 911 Turbo S

AudiVSPorsche

S8 vs Panamera Turbo

Frequently asked questions

Over 0–100 km/h, 911 Turbo S 991.2 wins (2,94 s vs 3,83 s).

911 Turbo S 991.2 goes from 0 to 100 km/h in 2,94 seconds (calibrated simulation).

911 Turbo S 991.2: 588 hp, ratio 2,72 kg/hp. S8: 571 hp, ratio 3,89 kg/hp.

911 Turbo S 991.2: 326 km/h. S8: 250 km/h.