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
Ai8PHEVvsB420dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specsi8 · 420d

BMW i8 Coupe I12 vs BMW 420d G22: 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.

sports car · 2018 vs 2021 · Methodology
BMWPHEV

i8 Coupe I12

374 hp · 320 Nm · 1,535 kg · 2018

VS
BMWDiesel

420d G22

190 hp · 400 Nm · 1,605 kg · 2021

Donnée constructeur en cours de validation pour ce profil

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

i8 Coupe I12

4,10kg/hpratio better by 4,34 kg/hp
CharacteristicValueDetail
Power374 hp3 cyl
Torque320 Nm
Weight1 535 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxUnknown
BMW

420d G22

8,45kg/hpcompensated by −70 kg
CharacteristicValueDetail
Power190 hp4 cyl
Torque400 Nm
Weight1 605 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

Other duels you might be interested in

AudiVSBMW

A4 40 TDI vs 420d

VolvoVSBMW

S60 B4 vs 420d

AudiVSBMW

A5 Avant vs 420d

AudiVSBMW

A5 Sedan vs 420d

Frequently asked questions

See the simulation above.

Data not available.

i8 Coupe I12: 374 hp, ratio 4,10 kg/hp. 420d G22: 190 hp, ratio 8,45 kg/hp.

i8 Coupe I12: 250 km/h. 420d G22: 240 km/h.