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AA4 40PetrolvsB420dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsA4 40 · 420d

Audi A4 40 TFSI vs BMW 420d F32: 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.

saloon · 2020 vs 2020 · Methodology
AudiPetrol

A4 40 TFSI

190 hp · 320 Nm · 1,515 kg · 2020

VS
BMWDieselFaster

420d F32

190 hp · 400 Nm · 1,605 kg · 2020

Result · 0–100 km/h

AAudi A4 40 TFSI

7.28 s

Gap0.24 sin favour of 420d
BBMW 420d F32

7.04 s

Summary · Caralogy simulation
MeasureA4 40 TFSI420d F32Gap
0–100 km/h7.28 s7.04 s0.24 s · 420d F32
400 m standing start15.36 s15.11 s0.25 s · 420d F32
1,000 m standing start28.08 s27.78 s0.30 s · 420d F32
Top speed (electronically limited)232 km/h240 km/h8 km/h · 420d F32
Power-to-weight ratio7.97 kg/hp8.45 kg/hpbetter ratio · A4 40 TFSI

Watch the race

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

AudiPetrolA4 40 TFSI
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel420d F32
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.
StageA4 40 TFSI420d F32
0–30 km/h1.67 s1.37 s
0–50 km/h2.79 s2.40 s
0–80 km/h5.10 s4.80 s
0–100 km/h7.28 s7.04 s
0–120 km/h10.10 s9.85 s
0–160 km/h18.44 s18.13 s
0–200 km/h34.86 s33.30 s
400 m standing start15.36 s15.11 s
1,000 m standing start28.08 s27.78 s
Top speed232 km/h240 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

A4 40 TFSI

7,97kg/hpratio better by 0,47 kg/hp
CharacteristicValueDetail
Power190 hpPending
Torque320 Nm
Weight1 515 kgmanufacturer kerb weight
DrivetrainTraction
Gearbox7-speed S tronic
BMW

420d F32

8,45kg/hpcompensated by −90 kg
CharacteristicValueDetail
Power190 hp4 cyl
Torque400 Nm
Weight1 605 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the 420d hits 100 km/h in 7.04 s versus 7.28 s for the A4 40 TFSI. At this point, the 420d leads by 0.24 s and sits roughly 8 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 420d is doing 119 km/h against 119 km/h for the A4 40 TFSI. The gap is 0.27 s. The gap remains stable from the start.

At 400 metres standing start, the 420d crosses the line in 15.10 s versus 15.36 s. The 0.26 s gap represents roughly 10 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 420d continues to build its lead. At 600 metres, it runs at 166 km/h versus 165 km/h. At 1,000 metres, the 420d finishes in 27.77 s versus 28.08 s, with a 0.30 s lead. Both vehicles have similar top speeds (232 vs 240 km/h), preventing any comeback.

What the numbers don’t tell you

Electronically capped at 240 km/h, the 420d 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 (7.97 kg/hp vs 8.45 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.78 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 A4 40 TFSI
Audi A5 Sedan
Instead of 420d F32
BMW 420iBMW 420i xDrive Gran CoupeBMW 420i Steptronic Gran Coupe

Other duels you might be interested in

AudiVSBMW

A4 40 TFSI vs 320i

AudiVSBMW

A4 40 TDI vs 420d

AudiVSBMW

A4 40 TFSI vs 320i Sedan

VolvoVSBMW

S60 B4 vs 420d

Frequently asked questions

Over 0–100 km/h, 420d F32 wins (7,04 s vs 7,28 s).

A4 40 TFSI goes from 0 to 100 km/h in 7,28 seconds (calibrated simulation).

A4 40 TFSI: 190 hp, ratio 7,97 kg/hp. 420d F32: 190 hp, ratio 8,45 kg/hp.

A4 40 TFSI: 232 km/h. 420d F32: 240 km/h.