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A4BEVvsB320dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs4 · 320d

MG4 Long Range RWD vs BMW 320d Steptronic 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.

compact · 2023 vs 2019 · Methodology
MGBEVFaster

4 Long Range RWD

245 hp · 350 Nm · 1,715 kg · 2023

VS
BMWDiesel

320d Steptronic G20

190 hp · 400 Nm · 1,455 kg · 2019

Result · 0–100 km/h

AMG4 Long Range RWD

6.73 s

Gap0.24 sin favour of 4 Long Range RWD
BBMW 320d Steptronic G20

6.97 s

Summary · Caralogy simulation
Measure4 Long Range RWD320d Steptronic G20Gap
0–100 km/h6.73 s6.97 s0.24 s · 4 Long Range RWD
400 m standing start14.92 s15.11 s0.19 s · 4 Long Range RWD
1,000 m standing start27.24 s27.70 s0.46 s · 4 Long Range RWD
Top speed (electronically limited)180 km/h237 km/h57 km/h · 320d Steptronic G20
Power-to-weight ratio7.00 kg/hp7.66 kg/hpbetter ratio · 4 Long Range RWD

Watch the race

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

MGBEV4 Long Range RWD
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel320d Steptronic 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.
Stage4 Long Range RWD320d Steptronic G20
0–30 km/h1.92 s1.49 s
0–50 km/h3.21 s2.52 s
0–80 km/h5.16 s4.85 s
0–100 km/h6.73 s6.97 s
0–120 km/h8.78 s9.73 s
0–160 km/h15.38 s17.81 s
0–200 km/h-32.74 s
400 m standing start14.92 s15.11 s
1,000 m standing start27.24 s27.70 s
Top speed180 km/h237 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.

MG

4 Long Range RWD

7,00kg/hpratio better by 0,66 kg/hp
CharacteristicValueDetail
Power245 hpPending
Torque350 Nm
Weight1 715 kgmanufacturer kerb weight
DrivetrainPropulsion
GearboxSingle-speed fixed gear
BMW

320d Steptronic G20

7,66kg/hpcompensated by −260 kg
CharacteristicValueDetail
Power190 hpPending
Torque400 Nm
Weight1 455 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the 4 Long Range RWD hits 100 km/h in 6.73 s versus 6.97 s for the 320d Steptronic. The instant torque of 350 Nm from the electric motor makes the difference. Despite the faster sprint time, the 320d Steptronic is 10 m further along the track at this moment: stronger low-speed acceleration offsets a slower run beyond 100 km/h.

From 100 km/h to 400 metres

At 200 metres, the 320d Steptronic is doing 120 km/h against 129 km/h for the 4 Long Range RWD. The gap is 0.15 s. The gap remains stable from the start.

At 400 metres standing start, the 4 Long Range RWD crosses the line in 14.92 s versus 15.10 s. The 0.19 s gap represents roughly 8 m of track - barely a car length.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 4 Long Range RWD continues to build its lead. At 600 metres, it runs at 176 km/h versus 167 km/h. At 1,000 metres, the 4 Long Range RWD finishes in 27.23 s versus 27.70 s, with a 0.47 s lead. Despite a higher top speed (237 km/h), the 320d Steptronic never recovers its launch deficit.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the 4 Long Range RWD is capped at 180 km/h, the 320d Steptronic at 240 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 11.35 seconds. The 0.24 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

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Frequently asked questions

Over 0–100 km/h, 4 Long Range RWD wins (6,73 s vs 6,97 s).

4 Long Range RWD goes from 0 to 100 km/h in 6,73 seconds (calibrated simulation).

4 Long Range RWD: 245 hp, ratio 7,00 kg/hp. 320d Steptronic G20: 190 hp, ratio 7,66 kg/hp.

4 Long Range RWD: 180 km/h. 320d Steptronic G20: 237 km/h.