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. /Sports Cars
AM8PetrolvsB840dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsM8 · 840d

BMW M8 Competition Coupe F92 vs BMW 840d xDrive 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.

limousine · 2021 vs 2021 · Methodology
BMWPetrolFaster

M8 Competition Coupe F92

625 hp · 750 Nm · 1,900 kg · 2021

VS
BMWDiesel

840d xDrive G15

340 hp · 700 Nm · 1,915 kg · 2021

Result · 0–100 km/h

ABMW M8 Competition Coupe F92

3.17 s

Gap1.56 sin favour of M8 Competition Coupe
BBMW 840d xDrive G15

4.73 s

Summary · Caralogy simulation
MeasureM8 Competition Coupe F92840d xDrive G15Gap
0–100 km/h3.17 s4.73 s1.56 s · M8 Competition Coupe F92
400 m standing start11.04 s13.00 s1.96 s · M8 Competition Coupe F92
1,000 m standing start20.15 s23.59 s3.44 s · M8 Competition Coupe F92
Top speed (electronically limited)250 km/h250 km/hSame
Power-to-weight ratio3.04 kg/hp5.63 kg/hpbetter ratio · M8 Competition Coupe F92

Watch the race

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

BMWPetrolM8 Competition Coupe F92
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel840d xDrive 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.
StageM8 Competition Coupe F92840d xDrive G15
0–30 km/h0.97 s1.29 s
0–50 km/h1.61 s2.06 s
0–80 km/h2.52 s3.45 s
0–100 km/h3.17 s4.73 s
0–120 km/h3.98 s6.33 s
0–160 km/h6.51 s10.67 s
0–200 km/h10.26 s17.19 s
400 m standing start11.04 s13.00 s
1,000 m standing start20.15 s23.59 s
Top speed limited250 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.

BMW

M8 Competition Coupe F92

3,04kg/hpratio better by 2,59 kg/hp
CharacteristicValueDetail
Power625 hpPending
Torque750 Nm
Weight1 900 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxEight-speed M Steptronic transmission with Drivelogic, transmission oil cooling
BMW

840d xDrive G15

5,63kg/hp
CharacteristicValueDetail
Power340 hp6 cyl
Torque700 Nm
Weight1 915 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the M8 Competition Coupe hits 100 km/h in 3.18 s versus 4.73 s for the 840d xDrive. At this point, the M8 Competition Coupe leads by 1.56 s and sits roughly 11 m ahead.

From 100 km/h to 400 metres

At 200 metres, the M8 Competition Coupe is doing 169 km/h against 142 km/h for the 840d xDrive. The gap is 1.29 s. The challenger starts to claw back ground.

At 400 metres standing start, the M8 Competition Coupe crosses the line in 11.04 s versus 13.00 s. The 1.96 s gap represents roughly 92 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the M8 Competition Coupe continues to build its lead. At 600 metres, it runs at 232 km/h versus 198 km/h. At 1,000 metres, the M8 Competition Coupe finishes in 20.15 s versus 23.58 s, with a 3.43 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 250 (i.e. 155 mph - industry threshold) km/h), preventing any comeback.

What the numbers don’t tell you

Both rivals share the same electronic speed cap: the M8 Competition Coupe and the 840d xDrive are governed to 250 (i.e. 155 mph - industry threshold) km/h. At that speed, standard-fit tyres approach their safety threshold - an industrial ceiling common to most electric vehicles in this segment. Neither car shows its true aerodynamic potential in this duel.

With two combustion powertrains, the difference comes down to power-to-weight ratio (3.04 kg/hp vs 5.63 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.26 seconds. The 1.56 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

PorscheVSBMW

Panamera Turbo S vs M8 Competition Coupe

BMWVSAudi

840d xDrive vs A8 50 TDI quattro tiptronic 210 kW MHEV

PorscheVSBMW

Panamera Turbo S Executive vs M8 Competition Coupe

AudiVSBMW

A8 55 TFSI quattro tiptronic 250 kW MHEV vs 840d xDrive

Frequently asked questions

Over 0–100 km/h, M8 Competition Coupe F92 wins (3,17 s vs 4,73 s).

M8 Competition Coupe F92 goes from 0 to 100 km/h in 3,17 seconds (calibrated simulation).

M8 Competition Coupe F92: 625 hp, ratio 3,04 kg/hp. 840d xDrive G15: 340 hp, ratio 5,63 kg/hp.

M8 Competition Coupe F92: 250 km/h. 840d xDrive G15: 250 km/h.