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A4PetrolvsB125dDiesel
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  • Specs4 · 125d

DS4 PureTech 225 EAT8 vs BMW 125d F20LCI: 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 · 2021 vs 2018 · Methodology
DSPetrol

4 PureTech 225 EAT8

228 hp · 300 Nm · 1,480 kg · 2021

VS
BMWDieselFaster

125d F20LCI

224 hp · 450 Nm · 1,480 kg · 2018

Result · 0–100 km/h

ADS4 PureTech 225 EAT8

7.76 s

Gap1.28 sin favour of 125d
BBMW 125d F20LCI

6.48 s

Summary · Caralogy simulation
Measure4 PureTech 225 EAT8125d F20LCIGap
0–100 km/h7.76 s6.48 s1.28 s · 125d F20LCI
400 m standing start15.61 s14.68 s0.93 s · 125d F20LCI
1,000 m standing start27.41 s26.40 s1.01 s · 125d F20LCI
Top speed (electronically limited)245 km/h240 km/h5 km/h · 4 PureTech 225 EAT8
Power-to-weight ratio6.49 kg/hp6.61 kg/hpbetter ratio · 4 PureTech 225 EAT8

Watch the race

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

DSPetrol4 PureTech 225 EAT8
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel125d F20LCI
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 PureTech 225 EAT8125d F20LCI
0–30 km/h2.26 s1.88 s
0–50 km/h3.79 s3.03 s
0–80 km/h5.98 s4.83 s
0–100 km/h7.76 s6.48 s
0–120 km/h9.81 s8.57 s
0–160 km/h15.84 s14.58 s
0–200 km/h26.53 s25.23 s
400 m standing start15.61 s14.68 s
1,000 m standing start27.41 s26.40 s
Top speed245 km/h240 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.

DS

4 PureTech 225 EAT8

6,49kg/hpratio better by 0,12 kg/hp
CharacteristicValueDetail
Power228 hpPending
Torque300 Nm
Weight1 480 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed automatic
BMW

125d F20LCI

6,61kg/hp0
CharacteristicValueDetail
Power224 hp4 cyl
Torque450 Nm
Weight1 480 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the 125d hits 100 km/h in 6.48 s versus 7.76 s for the 4 PureTech 225 EAT8. At this point, the 125d leads by 1.28 s and sits roughly 18 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 125d is doing 130 km/h against 126 km/h for the 4 PureTech 225 EAT8. The gap is 0.84 s. The challenger starts to claw back ground.

At 400 metres standing start, the 125d crosses the line in 14.67 s versus 15.61 s. The 0.93 s gap represents roughly 40 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 125d continues to build its lead. At 600 metres, it runs at 180 km/h versus 178 km/h. At 1,000 metres, the 125d finishes in 26.39 s versus 27.41 s, with a 1.01 s lead. Both vehicles have similar top speeds (245 vs 240 km/h), preventing any comeback.

What the numbers don’t tell you

Electronically capped at 240 km/h, the 125d never reaches its natural aerodynamic ceiling in this duel. That’s not a physical limit of the motor - it’s a deliberate manufacturer decision, typically tied to standard-fit tyre ratings or model-range positioning.

With two combustion powertrains, the difference comes down to power-to-weight ratio (6.49 kg/hp vs 6.61 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.04 seconds. The 1.28 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Compare with other alternatives

Swap one of the two models to explore an equivalent duel in the same segment.

Instead of 125d F20LCI
BMW 125i

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Frequently asked questions

Over 0–100 km/h, 125d F20LCI wins (6,48 s vs 7,76 s).

4 PureTech 225 EAT8 goes from 0 to 100 km/h in 7,76 seconds (calibrated simulation).

4 PureTech 225 EAT8: 228 hp, ratio 6,49 kg/hp. 125d F20LCI: 224 hp, ratio 6,61 kg/hp.

4 PureTech 225 EAT8: 245 km/h. 125d F20LCI: 240 km/h.