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AA4 40vsB320iPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsA4 40 · 320i

Audi A4 40 TFSI vs BMW 320i Sedan G20: 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 2021 · Methodology
AudiPetrol

A4 40 TFSI

190 hp · 320 Nm · 1,515 kg · 2020

VS
BMWPetrolFaster

320i Sedan G20

184 hp · 300 Nm · 1,495 kg · 2021

Result · 0–100 km/h

AAudi A4 40 TFSI

7.28 s

Gap0.26 sin favour of 320i Sedan
BBMW 320i Sedan G20

7.02 s

Summary · Caralogy simulation
MeasureA4 40 TFSI320i Sedan G20Gap
0–100 km/h7.28 s7.02 s0.26 s · 320i Sedan G20
400 m standing start15.36 s15.09 s0.27 s · 320i Sedan G20
1,000 m standing start28.08 s27.75 s0.33 s · 320i Sedan G20
Top speed (electronically limited)232 km/h235 km/h3 km/h · 320i Sedan G20
Power-to-weight ratio7.97 kg/hp8.13 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
BMWPetrol320i Sedan G20
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 TFSI320i Sedan G20
0–30 km/h1.67 s1.38 s
0–50 km/h2.79 s2.42 s
0–80 km/h5.10 s4.81 s
0–100 km/h7.28 s7.02 s
0–120 km/h10.10 s9.80 s
0–160 km/h18.44 s18.00 s
0–200 km/h34.86 s33.42 s
400 m standing start15.36 s15.09 s
1,000 m standing start28.08 s27.75 s
Top speed232 km/h235 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 0,15 kg/hp
CharacteristicValueDetail
Power190 hpPending
Torque320 Nm
Weight1 515 kgmanufacturer kerb weight
DrivetrainTraction
Gearbox7-speed S tronic
BMW

320i Sedan G20

8,13kg/hp
CharacteristicValueDetail
Power184 hpPending
Torque300 Nm
Weight1 495 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the 320i Sedan hits 100 km/h in 7.02 s versus 7.28 s for the A4 40 TFSI. At this point, the 320i Sedan leads by 0.26 s and sits roughly 7 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 320i Sedan is doing 120 km/h against 119 km/h for the A4 40 TFSI. The gap is 0.26 s. The gap remains stable from the start.

At 400 metres standing start, the 320i Sedan crosses the line in 15.09 s versus 15.36 s. The 0.27 s gap represents roughly 11 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 320i Sedan continues to build its lead. At 600 metres, it runs at 166 km/h versus 165 km/h. At 1,000 metres, the 320i Sedan finishes in 27.74 s versus 28.08 s, with a 0.33 s lead. Both vehicles have similar top speeds (232 vs 235 km/h), preventing any comeback.

What the numbers don’t tell you

Electronically capped at 235 km/h, the 320i Sedan 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 8.13 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 0.26 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 SedanAudi A5 Sedan
Instead of 320i Sedan G20
BMW 320iBMW 320i xDrive

Other duels you might be interested in

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A4 40 TFSI vs 320i

AudiVSBMW

A5 Avant vs 320i Sedan

AudiVSBMW

A4 40 TFSI vs 320i Touring

AudiVSBMW

A5 Avant vs 320i Sedan

Frequently asked questions

Over 0–100 km/h, 320i Sedan G20 wins (7,02 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. 320i Sedan G20: 184 hp, ratio 8,13 kg/hp.

A4 40 TFSI: 232 km/h. 320i Sedan G20: 235 km/h.