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A630iPetrolvsBA4 40Diesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs630i · A4 40

BMW 630i Gran Turismo G32 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 · 2018 vs 2020 · Methodology
BMWPetrolFaster

630i Gran Turismo G32

258 hp · 400 Nm · 1,720 kg · 2018

VS
AudiDiesel

A4 40 TDI

190 hp · 400 Nm · 1,575 kg · 2020

Result · 0–100 km/h

ABMW 630i Gran Turismo G32

6.27 s

Gap1.52 sin favour of 630i Gran Turismo
BAudi A4 40 TDI

7.79 s

Summary · Caralogy simulation
Measure630i Gran Turismo G32A4 40 TDIGap
0–100 km/h6.27 s7.79 s1.52 s · 630i Gran Turismo G32
400 m standing start14.49 s15.77 s1.28 s · 630i Gran Turismo G32
1,000 m standing start26.40 s28.09 s1.69 s · 630i Gran Turismo G32
Top speed (electronically limited)250 km/h242 km/h8 km/h · 630i Gran Turismo G32
Power-to-weight ratio6.67 kg/hp8.29 kg/hpbetter ratio · 630i Gran Turismo G32

Watch the race

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

BMWPetrol630i Gran Turismo G32
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.
Stage630i Gran Turismo G32A4 40 TDI
0–30 km/h1.48 s2.16 s
0–50 km/h2.47 s3.61 s
0–80 km/h4.46 s5.84 s
0–100 km/h6.27 s7.79 s
0–120 km/h8.56 s10.28 s
0–160 km/h15.07 s17.57 s
0–200 km/h26.13 s30.63 s
400 m standing start14.49 s15.77 s
1,000 m standing start26.40 s28.09 s
Top speed limited250 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.

BMW

630i Gran Turismo G32

6,67kg/hpratio better by 1,62 kg/hp
CharacteristicValueDetail
Power258 hp4 cyl
Torque400 Nm
Weight1 720 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed Steptronic
Audi

A4 40 TDI

8,29kg/hpcompensated by −145 kg
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 630i Gran Turismo hits 100 km/h in 6.27 s versus 7.79 s for the A4 40 TDI. At this point, the 630i Gran Turismo leads by 1.52 s and sits roughly 24 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 630i Gran Turismo is doing 127 km/h against 122 km/h for the A4 40 TDI. The gap is 1.10 s. The challenger starts to claw back ground.

At 400 metres standing start, the 630i Gran Turismo crosses the line in 14.49 s versus 15.77 s. The 1.28 s gap represents roughly 53 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 630i Gran Turismo continues to build its lead. At 600 metres, it runs at 176 km/h versus 171 km/h. At 1,000 metres, the 630i Gran Turismo finishes in 26.40 s versus 28.08 s, with a 1.68 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 242 km/h), preventing any comeback.

What the numbers don’t tell you

Electronically capped at 250 (i.e. 155 mph - industry threshold) km/h, the 630i Gran Turismo 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 (6.67 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 1.52 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.

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BMW 320d

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Frequently asked questions

Over 0–100 km/h, 630i Gran Turismo G32 wins (6,27 s vs 7,79 s).

630i Gran Turismo G32 goes from 0 to 100 km/h in 6,27 seconds (calibrated simulation).

630i Gran Turismo G32: 258 hp, ratio 6,67 kg/hp. A4 40 TDI: 190 hp, ratio 8,29 kg/hp.

630i Gran Turismo G32: 250 km/h. A4 40 TDI: 242 km/h.