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Home›Duel›Audi S8 vs Audi S5

Performance comparison

Audi S8 vs Audi S5 Avant: 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.

AudiPetrolFaster

S8

571 hp · 800 Nm · 2,220 kg · 2025

VS
AudiPetrol

S5 Avant

367 hp · 550 Nm · 1,965 kg · 2026

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.

S8S5 Avant
0–100 km/h3,83 s−0,70 s4,53 s
400 m standing start11,81 s−1,03 s12,84 s
1,000 m standing start21,27 s−2,22 s23,49 s
Top speed (electronically limited)250 km/h250 km/h
Power-to-weight ratio3,89 kg/hpbetter ratio5,35 kg/hp

Watch the race

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

AudiPetrolS8
Speed
0km/h
Timer
0,00s
Distance
0m
AudiPetrolS5 Avant
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.

PalierS8S5 Avant
0–30 km/h1,07 s1,11 stight gap
0–50 km/h1,78 s1,85 stight gap
0–80 km/h2,88 s3,23 s
0–100 km/h3,83 s4,53 s
0–120 km/h4,97 s6,15 s
0–160 km/h7,99 s10,55 s
0–200 km/h12,24 s17,29 s
400 m standing start11,81 s12,84 s
1,000 m standing start21,27 s23,49 s
Top speed limited250 km/h250 km/h

Under the bonnet

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

Audi

S8

3,89kg/hpratio better by 1,47 kg/hp
CharacteristicValueDetail
Power571 hpPending
Torque800 Nm
Weight2 220 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed tiptronic
Audi

S5 Avant

5,35kg/hpcompensated by −255 kg
CharacteristicValueDetail
Power367 hpPending
Torque550 Nm
Weight1 965 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox7-speed S tronic

The start: 0 to 100 km/h

Off the line, the S8 hits 100 km/h in 3.83 s versus 4.53 s for the S5 Avant. At this point, the S8 leads by 0.70 s and sits roughly 4 m ahead.

From 100 km/h to 400 metres

At 200 metres, the S8 is doing 157 km/h against 142 km/h for the S5 Avant. The gap is 0.56 s. The challenger starts to claw back ground.

At 400 metres standing start, the S8 crosses the line in 11.81 s versus 12.83 s. The 1.02 s gap represents roughly 49 m of track — a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the S8 continues to build its lead. At 600 metres, it runs at 222 km/h versus 197 km/h. At 1,000 metres, the S8 finishes in 21.26 s versus 23.49 s, with a 2.22 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph — industry threshold) vs 250 (i.e. 155 mph — industry threshold) km/h), preventing any comeback.

What the numbers don’t tell you

Both rivals share the same electronic speed cap: the S8 and the S5 Avant are governed to 250 (i.e. 155 mph — industry threshold) km/h. At that speed, standard-fit tyres approach their safety threshold — an industrial ceiling common to most electric vehicles in this segment. Neither car shows its true aerodynamic potential in this duel.

With two combustion powertrains, the difference comes down to power-to-weight ratio (3.89 kg/hp vs 5.35 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.09 seconds. The 0.70 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 S8
Bmw M5 CSMercedes Maybach S 680Alfa Romeo Giulia Quadrifoglio
Instead of S5 Avant
Bmw M550d xDrive TouringBmw M340i xDrive TouringBmw 540i xDrive Touring

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Frequently asked questions

Sur 0–100 km/h, S8 gagne (3,83 s vs 4,53 s).

S8 passe de 0 à 100 km/h en 3,83 secondes (simulation calibrée).

S8 : 571 hp, ratio 3,89 kg/hp. S5 Avant : 367 hp, ratio 5,35 kg/hp.

S8 : 250 km/h. S5 Avant : 250 km/h.