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AA6 45vsB520iPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsA6 45 · 520i

Audi A6 45 TFSI vs BMW 520i G30: 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 · 2020 vs 2018
AudiPetrolFaster

A6 45 TFSI

245 hp · 370 Nm · 1,640 kg · 2020

VS
BMWPetrol

520i G30

184 hp · 290 Nm · 1,635 kg · 2018

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.

A6 45 TFSI520i G30
0–100 km/h6,33 s−1,74 s8,07 s
400 m standing start14,54 s−1,43 s15,97 s
1,000 m standing start26,24 s−2,70 s28,94 s
Top speed (electronically limited)247 km/h+22 km/h225 km/h
Power-to-weight ratio6,69 kg/hpbetter ratio8,89 kg/hp

Watch the race

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

AudiPetrolA6 45 TFSI
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol520i G30
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.

PalierA6 45 TFSI520i G30
0–30 km/h1,65 s1,93 s
0–50 km/h2,75 s3,22 s
0–80 km/h4,62 s5,74 s
0–100 km/h6,33 s8,07 s
0–120 km/h8,51 s11,09 s
0–160 km/h14,57 s20,03 s
0–200 km/h24,58 s38,15 s
400 m standing start14,54 s15,97 s
1,000 m standing start26,24 s28,94 s
Top speed247 km/h225 km/h

Under the bonnet

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

Audi

A6 45 TFSI

6,69kg/hpratio better by 2,19 kg/hp
CharacteristicValueDetail
Power245 hpPending
Torque370 Nm
Weight1 640 kgmanufacturer kerb weight
DrivetrainTraction
Gearbox7-speed S tronic
BMW

520i G30

8,89kg/hp
CharacteristicValueDetail
Power184 hp4 cyl
Torque290 Nm
Weight1 635 kgmanufacturer kerb weight
DrivetrainPropulsion
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the A6 45 TFSI hits 100 km/h in 6.33 s versus 8.07 s for the 520i. At this point, the A6 45 TFSI leads by 1.74 s and sits roughly 14 m ahead.

From 100 km/h to 400 metres

At 200 metres, the A6 45 TFSI is doing 128 km/h against 116 km/h for the 520i. The gap is 0.91 s. The challenger starts to claw back ground.

At 400 metres standing start, the A6 45 TFSI crosses the line in 14.54 s versus 15.97 s. The 1.43 s gap represents roughly 56 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the A6 45 TFSI continues to build its lead. At 600 metres, it runs at 180 km/h versus 162 km/h. At 1,000 metres, the A6 45 TFSI finishes in 26.23 s versus 28.94 s, with a 2.70 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the A6 45 TFSI is capped at 247 km/h, the 520i at 225 km/h. This isn’t a physical engine limit - it’s a manufacturer choice, usually for tyre safety or homologation reasons. Neither car reaches its true aerodynamic top speed.

With two combustion powertrains, the difference comes down to power-to-weight ratio (6.69 kg/hp vs 8.89 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 12.90 seconds. The 1.74 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 45 TFSI
Audi A6 Sedan
Instead of 520i G30
BMW 520iBMW 520i

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Frequently asked questions

Over 0–100 km/h, A6 45 TFSI wins (6,33 s vs 8,07 s).

A6 45 TFSI goes from 0 to 100 km/h in 6,33 seconds (calibrated simulation).

A6 45 TFSI: 245 hp, ratio 6,69 kg/hp. 520i G30: 184 hp, ratio 8,89 kg/hp.

A6 45 TFSI: 247 km/h. 520i G30: 225 km/h.