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  • SpecsSeal · 120i

BYD Seal 313 2WD vs BMW 120i F40: 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.

saloon · 2022 vs 2021 · Methodology
BYDBEVFaster

Seal 313 2WD

313 hp · 360 Nm · 1,988 kg · 2022

VS
BMWPetrol

120i F40

178 hp · 280 Nm · 1,390 kg · 2021

Result · 0–100 km/h

ABYD Seal 313 2WD

6.00 s

Gap0.91 sin favour of Seal 313 2WD
BBMW 120i F40

6.91 s

Summary · Caralogy simulation
MeasureSeal 313 2WD120i F40Gap
0–100 km/h6.00 s6.91 s0.91 s · Seal 313 2WD
400 m standing start14.21 s15.02 s0.81 s · Seal 313 2WD
1,000 m standing start26.32 s27.09 s0.77 s · Seal 313 2WD
Top speed (electronically limited)180 km/h235 km/h55 km/h · 120i F40
Power-to-weight ratio6.35 kg/hp7.81 kg/hpbetter ratio · Seal 313 2WD

Watch the race

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

BYDBEVSeal 313 2WD
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol120i F40
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.
StageSeal 313 2WD120i F40
0–30 km/h1.74 s · tight gap1.76 s
0–50 km/h2.90 s · tight gap2.94 s
0–80 km/h4.66 s4.96 s
0–100 km/h6.00 s6.91 s
0–120 km/h7.72 s9.21 s
0–160 km/h13.20 s16.06 s
0–200 km/h-27.89 s
400 m standing start14.21 s15.02 s
1,000 m standing start26.32 s27.09 s
Top speed180 km/h235 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.

BYD

Seal 313 2WD

6,35kg/hpratio better by 1,46 kg/hp
CharacteristicValueDetail
Power313 hpPending
Torque360 Nm
Weight1 988 kgmanufacturer kerb weight
Drivetrain-
Gearboxsingle-speed reduction
BMW

120i F40

7,81kg/hpcompensated by −598 kg
CharacteristicValueDetail
Power178 hp4 cyl
Torque280 Nm
Weight1 390 kgmanufacturer kerb weight
DrivetrainTraction
GearboxSeven-speed Steptronic dual-clutch transmission

The start: 0 to 100 km/h

Off the line, the Seal 313 2WD hits 100 km/h in 6.00 s versus 6.91 s for the 120i. The instant torque of 360 Nm from the electric motor makes the difference. At this point, the Seal 313 2WD leads by 0.91 s and sits roughly 3 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Seal 313 2WD is doing 135 km/h against 124 km/h for the 120i. The gap is 0.44 s. The challenger starts to claw back ground.

At 400 metres standing start, the Seal 313 2WD crosses the line in 14.21 s versus 15.02 s. The 0.81 s gap represents roughly 35 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Seal 313 2WD continues to build its lead. At 600 metres, it runs at 180 km/h versus 174 km/h. At 1,000 metres, the Seal 313 2WD finishes in 26.31 s versus 27.09 s, with a 0.78 s lead. Despite a higher top speed (235 km/h), the 120i never recovers its launch deficit.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Seal 313 2WD is capped at 180 km/h, the 120i at 235 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 10.76 seconds. The 0.91 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

BYDVSBMW

Seal 313 2WD vs i4 eDrive35

AudiVSBMW

A3 allstreet vs 120i

BYDVSTesla

Seal 313 2WD vs Model 3 RWD

AudiVSBMW

A3 Sedan vs 120i

Frequently asked questions

Over 0–100 km/h, Seal 313 2WD wins (6,00 s vs 6,91 s).

Seal 313 2WD goes from 0 to 100 km/h in 6,00 seconds (calibrated simulation).

Seal 313 2WD: 313 hp, ratio 6,35 kg/hp. 120i F40: 178 hp, ratio 7,81 kg/hp.

Seal 313 2WD: 180 km/h. 120i F40: 235 km/h.