Skip to main content
CaralogyCaralogy
HomeBrandsRoad TripBudgetDuelGuides
Caralogy

The car comparison platform. Physics simulation, road trips, real costs.

Navigation
All brandsCar duelRunning costsMotorwayMethodology
Simulators
Motorway simulatorRunning costsPerformance duel
Brands
VolkswagenBMWMercedesToyotaTeslaAudi
FRENDEESIT
© 2026 Caralogy · All rights reserved
  1. Home
  2. /Duel
  3. /Estates
AA6BEVvsB840iPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsA6 · 840i

Audi A6 Avant e-tron vs BMW 840i Convertible G15: 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
AudiBEV

A6 Avant e-tron

381 hp · 565 Nm · 2,381 kg · 2026

VS
BMWPetrol

840i Convertible G15

340 hp · 500 Nm · 1,830 kg · 2020

Result · 0–100 km/h

AAudi A6 Avant e-tron

5.45 s

Gap0.09 sNot a significant gap
BBMW 840i Convertible G15

5.36 s

Summary · Caralogy simulation
MeasureA6 Avant e-tron840i Convertible G15Gap
0–100 km/h5.45 s5.36 s0.09 s · 840i Convertible G15
400 m standing start13.77 s13.59 s0.18 s · 840i Convertible G15
1,000 m standing start25.01 s24.56 s0.45 s · 840i Convertible G15
Top speed (electronically limited)210 km/h250 km/h40 km/h · 840i Convertible G15
Power-to-weight ratio6.25 kg/hp5.38 kg/hpbetter ratio · 840i Convertible G15

Watch the race

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

AudiBEVA6 Avant e-tron
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol840i Convertible G15
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 Avant e-tron840i Convertible G15
0–30 km/h1.50 s1.40 s · tight gap
0–50 km/h2.49 s2.33 s
0–80 km/h4.06 s3.91 s
0–100 km/h5.45 s5.36 s · tight gap
0–120 km/h7.22 s7.12 s · tight gap
0–160 km/h12.62 s11.98 s
0–200 km/h20.97 s19.49 s
400 m standing start13.77 s13.59 s
1,000 m standing start25.01 s24.56 s
Top speed limited210 km/h250 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 e-tron

6,25kg/hpcompensated by −551 kg
CharacteristicValueDetail
Power381 hpPending
Torque565 Nm
Weight2 381 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxUnknown
BMW

840i Convertible G15

5,38kg/hpratio better by 0,87 kg/hp
CharacteristicValueDetail
Power340 hp6 cyl
Torque500 Nm
Weight1 830 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the 840i Convertible hits 100 km/h in 5.36 s versus 5.45 s for the A6 Avant e-tron. Despite lacking instant torque, 340 hp of power compensates. The 0.09 s gap is negligible: both vehicles are neck and neck.

From 100 km/h to 400 metres

At 200 metres, the 840i Convertible is doing 137 km/h against 136 km/h for the A6 Avant e-tron. The gap is 0.11 s. The gap remains stable from the start.

At 400 metres standing start, the 840i Convertible crosses the line in 13.59 s versus 13.77 s. The 0.18 s gap represents roughly 9 m of track - barely a car length.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 840i Convertible continues to build its lead. At 600 metres, it runs at 191 km/h versus 187 km/h. At 1,000 metres, the 840i Convertible finishes in 24.56 s versus 25.00 s, with a 0.45 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the A6 Avant e-tron is capped at 210 km/h, the 840i Convertible at 250 (i.e. 155 mph - industry threshold) 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.

Instant electric torque gives an advantage off the line. The higher top speed of the combustion engine gives an advantage over longer distances. The distance at which one catches the other depends on the top speed differential.

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 8.31 seconds. The 0.09 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

BMWVSAudi

i5 xDrive40 vs A6 Avant e-tron

BMWVSPorsche

840i Convertible vs Panamera

BMWVSAudi

i5 xDrive40 Touring vs A6 Avant e-tron

BMWVSPorsche

840i Convertible vs Panamera 4

Frequently asked questions

Over 0–100 km/h, A6 Avant e-tron and 840i Convertible G15 are neck and neck (5,36 s vs 5,45 s, no significant gap).

A6 Avant e-tron goes from 0 to 100 km/h in 5,45 seconds (calibrated simulation).

A6 Avant e-tron: 381 hp, ratio 6,25 kg/hp. 840i Convertible G15: 340 hp, ratio 5,38 kg/hp.

A6 Avant e-tron: 210 km/h. 840i Convertible G15: 250 km/h.