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A840iPetrolvsBADiesel
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  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs840i · A

BMW 840i xDrive G15 vs Mercedes A 200 d W177: 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.

limousine · 2021 vs 2019 · Methodology
BMWPetrolFaster

840i xDrive G15

333 hp · 500 Nm · 1,795 kg · 2021

VS
MercedesDiesel

A 200 d W177

150 hp · 320 Nm · 1,430 kg · 2019

Result · 0–100 km/h

ABMW 840i xDrive G15

4.81 s

Gap3.47 sin favour of 840i xDrive
BMercedes A 200 d W177

8.28 s

Summary · Caralogy simulation
Measure840i xDrive G15A 200 d W177Gap
0–100 km/h4.81 s8.28 s3.47 s · 840i xDrive G15
400 m standing start13.05 s16.10 s3.05 s · 840i xDrive G15
1,000 m standing start23.65 s29.00 s5.35 s · 840i xDrive G15
Top speed (electronically limited)250 km/h220 km/h30 km/h · 840i xDrive G15
Power-to-weight ratio5.39 kg/hp9.53 kg/hpbetter ratio · 840i xDrive G15

Watch the race

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

BMWPetrol840i xDrive G15
Speed
0km/h
Timer
0,00s
Distance
0m
MercedesDieselA 200 d W177
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.
Stage840i xDrive G15A 200 d W177
0–30 km/h1.29 s2.08 s
0–50 km/h2.13 s3.21 s
0–80 km/h3.54 s5.85 s
0–100 km/h4.81 s8.28 s
0–120 km/h6.40 s11.16 s
0–160 km/h10.71 s19.91 s
0–200 km/h17.25 s36.61 s
400 m standing start13.05 s16.10 s
1,000 m standing start23.65 s29.00 s
Top speed limited250 km/h220 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.

BMW

840i xDrive G15

5,39kg/hpratio better by 4,14 kg/hp
CharacteristicValueDetail
Power333 hp6 cyl
Torque500 Nm
Weight1 795 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic
Mercedes

A 200 d W177

9,53kg/hpcompensated by −365 kg
CharacteristicValueDetail
Power150 hpPending
Torque320 Nm
Weight1 430 kgmanufacturer kerb weight
DrivetrainTraction
Gearbox8G-DCT dual-clutch

The start: 0 to 100 km/h

Off the line, the 840i xDrive hits 100 km/h in 4.81 s versus 8.28 s for the A 200 d. At this point, the 840i xDrive leads by 3.47 s and sits roughly 25 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 840i xDrive is doing 142 km/h against 117 km/h for the A 200 d. The gap is 2.05 s. The challenger starts to claw back ground.

At 400 metres standing start, the 840i xDrive crosses the line in 13.05 s versus 16.10 s. The 3.04 s gap represents roughly 116 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 840i xDrive continues to build its lead. At 600 metres, it runs at 198 km/h versus 163 km/h. At 1,000 metres, the 840i xDrive finishes in 23.65 s versus 29.00 s, with a 5.35 s lead.

What the numbers don’t tell you

The 840i xDrive features all-wheel drive (AWD) against the A 200 d’s FWD. At low speeds (0-30, 0-50, 0-80 km/h), AWD doubles the driven contact area: all four wheels transmit torque to the road, virtually eliminating wheelspin at launch. This traction advantage is decisive in the range where the motor delivers peak torque, before power and aerodynamics take over.

Both rivals are electronically governed, but not at the same level: the 840i xDrive is capped at 250 (i.e. 155 mph - industry threshold) km/h, the A 200 d at 220 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.

With two combustion powertrains, the difference comes down to power-to-weight ratio (5.39 kg/hp vs 9.53 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 13.11 seconds. The 3.47 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, 840i xDrive G15 wins (4,81 s vs 8,28 s).

840i xDrive G15 goes from 0 to 100 km/h in 4,81 seconds (calibrated simulation).

840i xDrive G15: 333 hp, ratio 5,39 kg/hp. A 200 d W177: 150 hp, ratio 9,53 kg/hp.

840i xDrive G15: 250 km/h. A 200 d W177: 220 km/h.