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AA6vsBA4 40Diesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsA6 · A4 40

Audi A6 Avant vs Audi A4 40 TDI: 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.

grand tourer · 2026 vs 2020 · Methodology
AudiDieselFaster

A6 Avant

204 hp · 400 Nm · 2,000 kg · 2026

VS
AudiDiesel

A4 40 TDI

190 hp · 400 Nm · 1,575 kg · 2020

Result · 0–100 km/h

AAudi A6 Avant

7.00 s

Gap0.79 sin favour of A6 Avant
BAudi A4 40 TDI

7.79 s

Summary · Caralogy simulation
MeasureA6 AvantA4 40 TDIGap
0–100 km/h7.00 s7.79 s0.79 s · A6 Avant
400 m standing start15.02 s15.77 s0.75 s · A6 Avant
1,000 m standing start27.98 s28.09 s0.11 s · A6 Avant
Top speed (electronically limited)238 km/h242 km/h4 km/h · A4 40 TDI
Power-to-weight ratio9.80 kg/hp8.29 kg/hpbetter ratio · A4 40 TDI

Watch the race

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

AudiDieselA6 Avant
Speed
0km/h
Timer
0,00s
Distance
0m
AudiDieselA4 40 TDI
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.
StageA6 AvantA4 40 TDI
0–30 km/h1.08 s2.16 s
0–50 km/h2.10 s3.61 s
0–80 km/h4.60 s5.84 s
0–100 km/h7.00 s7.79 s
0–120 km/h10.04 s10.28 s
0–160 km/h19.37 s17.57 s
0–200 km/h34.70 s30.63 s
400 m standing start15.02 s15.77 s
1,000 m standing start27.98 s · tight gap28.09 s
Top speed238 km/h242 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.

Audi

A6 Avant

9,80kg/hpcompensated by −425 kg
CharacteristicValueDetail
Power204 hpPending
Torque400 Nm
Weight2 000 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox7-speed S tronic
Audi

A4 40 TDI

8,29kg/hpratio better by 1,51 kg/hp
CharacteristicValueDetail
Power190 hpPending
Torque400 Nm
Weight1 575 kgmanufacturer kerb weight
DrivetrainTraction
Gearbox7-speed S tronic

The start: 0 to 100 km/h

Off the line, the A6 Avant hits 100 km/h in 7.00 s versus 7.79 s for the A4 40 TDI. At this point, the A6 Avant leads by 0.79 s and sits roughly 29 m ahead.

From 100 km/h to 400 metres

At 200 metres, the A6 Avant is doing 117 km/h against 122 km/h for the A4 40 TDI. The gap is 0.98 s. The gap widens compared to the 0-100.

At 400 metres standing start, the A6 Avant crosses the line in 15.02 s versus 15.77 s. The 0.75 s gap represents roughly 31 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the gap narrows.

At 1,000 metres, the A6 Avant finishes in 27.98 s versus 28.08 s, with just 0.10 s to spare. The A4 40 TDI fails to fully close the launch gap.

What the numbers don’t tell you

The A6 Avant features all-wheel drive (AWD) against the A4 40 TDI’s FWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.

Electronically capped at 238 km/h, the A6 Avant never reaches its natural aerodynamic ceiling in this duel. That’s not a physical limit of the motor - it’s a deliberate manufacturer decision, typically tied to standard-fit tyre ratings or model-range positioning.

With two combustion powertrains, the difference comes down to power-to-weight ratio (9.80 kg/hp vs 8.29 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.76 seconds. The 0.79 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 A6 Avant
BMW 320d xDrive TouringBMW 320d xDrive TouringBMW 320d Touring
Instead of A4 40 TDI
BMW 525dBMW 525dBMW 525d

Other duels you might be interested in

AudiVSBMW

A6 Avant vs 520d

AudiVSBMW

A4 40 TDI vs 320d

AudiVSBMW

A6 Avant vs 520d Touring

AudiVSBMW

A4 40 TDI vs 320d

Frequently asked questions

Over 0–100 km/h, A6 Avant wins (7,00 s vs 7,79 s).

A6 Avant goes from 0 to 100 km/h in 7,00 seconds (calibrated simulation).

A6 Avant: 204 hp, ratio 9,80 kg/hp. A4 40 TDI: 190 hp, ratio 8,29 kg/hp.

A6 Avant: 238 km/h. A4 40 TDI: 242 km/h.