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AFocusPetrolvsB420dDiesel
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  • PerformancePerformance0-100, top speed
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  • SpecsFocus · 420d

Ford Focus ST 250 Gen3 vs BMW 420d Convertible 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.

compact · 2015 vs 2021 · Methodology
FordPetrolFaster

Focus ST 250 Gen3

250 hp · 360 Nm · 1,390 kg · 2015

VS
BMWDiesel

420d Convertible G22

190 hp · 400 Nm · 1,775 kg · 2021

Result · 0–100 km/h

AFord Focus ST 250 Gen3

6.43 s

Gap1.32 sin favour of Focus ST 250 Gen3
BBMW 420d Convertible G22

7.75 s

Summary · Caralogy simulation
MeasureFocus ST 250 Gen3420d Convertible G22Gap
0–100 km/h6.43 s7.75 s1.32 s · Focus ST 250 Gen3
400 m standing start14.56 s15.64 s1.08 s · Focus ST 250 Gen3
1,000 m standing start25.77 s28.69 s2.92 s · Focus ST 250 Gen3
Top speed (electronically limited)254 km/h236 km/h18 km/h · Focus ST 250 Gen3
Power-to-weight ratio5.56 kg/hp9.34 kg/hpbetter ratio · Focus ST 250 Gen3

Watch the race

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

FordPetrolFocus ST 250 Gen3
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel420d Convertible G22
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.
StageFocus ST 250 Gen3420d Convertible G22
0–30 km/h1.83 s1.52 s
0–50 km/h3.06 s2.64 s
0–80 km/h5.09 s5.29 s
0–100 km/h6.43 s7.75 s
0–120 km/h8.42 s10.87 s
0–160 km/h13.56 s20.11 s
0–200 km/h21.65 s37.54 s
400 m standing start14.56 s15.64 s
1,000 m standing start25.77 s28.69 s
Top speed254 km/h236 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.

Ford

Focus ST 250 Gen3

5,56kg/hpratio better by 3,78 kg/hp
CharacteristicValueDetail
Power250 hpPending
Torque360 Nm
Weight1 390 kgmanufacturer kerb weight
Drivetrain-
Gearbox6-speed manual
BMW

420d Convertible G22

9,34kg/hpcompensated by −385 kg
CharacteristicValueDetail
Power190 hp4 cyl
Torque400 Nm
Weight1 775 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the Focus ST 250 Gen3 hits 100 km/h in 6.43 s versus 7.75 s for the 420d Convertible. Despite the faster sprint time, the 420d Convertible is 4 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 Focus ST 250 Gen3 is doing 134 km/h against 116 km/h for the 420d Convertible. The gap is 0.31 s. The challenger starts to claw back ground.

At 400 metres standing start, the Focus ST 250 Gen3 crosses the line in 14.55 s versus 15.64 s. The 1.09 s gap represents roughly 43 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Focus ST 250 Gen3 continues to build its lead. At 600 metres, it runs at 188 km/h versus 161 km/h. At 1,000 metres, the Focus ST 250 Gen3 finishes in 25.77 s versus 28.69 s, with a 2.92 s lead.

What the numbers don’t tell you

Electronically capped at 236 km/h, the 420d Convertible 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 (5.56 kg/hp vs 9.34 kg/hp) and transmission (Manual vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 12.82 seconds. The 1.32 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

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230i vs Focus ST 250 Gen3

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BMWVSFord

230i vs Focus ST 250 Gen3

VolvoVSBMW

S60 B4 vs 420d Convertible

Frequently asked questions

Over 0–100 km/h, Focus ST 250 Gen3 wins (6,43 s vs 7,75 s).

Focus ST 250 Gen3 goes from 0 to 100 km/h in 6,43 seconds (calibrated simulation).

Focus ST 250 Gen3: 250 hp, ratio 5,56 kg/hp. 420d Convertible G22: 190 hp, ratio 9,34 kg/hp.

Focus ST 250 Gen3: 254 km/h. 420d Convertible G22: 236 km/h.