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Home›Duel›BMW 320d vs Mercedes CLA 180

Performance comparison

BMW 320d G20 vs Mercedes CLA 180 Saloon: 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.

BMWHybridFaster

320d G20

190 hp · 400 Nm · 1,540 kg · 2020

VS
MercedesHybrid

CLA 180 Saloon

156 hp · 280 Nm · 1,695 kg · 2025

MotorwayRange & chargingPerformance0-100, top speedConsumptionAnnual TCO

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.

320d G20CLA 180 Saloon
0–100 km/h6,83 s−2,06 s8,89 s
400 m standing start14,96 s−1,48 s16,44 s
1,000 m standing start27,60 s−2,35 s29,95 s
Top speed (electronically limited)240 km/h+22 km/h218 km/h
Power-to-weight ratio8,11 kg/hpbetter ratio10,87 kg/hp

Watch the race

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

BMWHybrid320d G20
Speed
0km/h
Timer
0,00s
Distance
0m
MercedesHybridCLA 180 Saloon
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. Winner in green.

Palier320d G20CLA 180 Saloon
0–30 km/h1,25 s1,75 s
0–50 km/h2,27 s3,07 s
0–80 km/h4,65 s6,05 s
0–100 km/h6,83 s8,89 s
0–120 km/h9,65 s12,40 s
0–160 km/h17,86 s22,81 s
0–200 km/h32,75 s42,16 s
400 m standing start14,96 s16,44 s
1,000 m standing start27,60 s29,95 s
Top speed240 km/h218 km/h

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

BMW

320d G20

8,11kg/hpratio better by 2,76 kg/hp
CharacteristicValueDetail
Power190 hp4 cyl
Torque400 Nm
Weight1 540 kgmanufacturer kerb weight
Drivetrain-
Gearboxeight-speed Steptronic transmission
Mercedes

CLA 180 Saloon

10,87kg/hpcompensated by −155 kg
CharacteristicValueDetail
Power156 hpPending
Torque280 Nm
Weight1 695 kgmanufacturer kerb weight
DrivetrainTraction
GearboxUnknown

The start: 0 to 100 km/h

Off the line, the Bmw 320d hits 100 km/h in 6.83 s versus 8.89 s for the CLA 180 Saloon. At this point, the Bmw 320d leads by 2.06 s and sits roughly 21 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Bmw 320d is doing 120 km/h against 111 km/h for the CLA 180 Saloon. The gap is 1.07 s. The challenger starts to claw back ground.

At 400 metres standing start, the Bmw 320d crosses the line in 14.95 s versus 16.44 s. The 1.49 s gap represents roughly 56 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Bmw 320d continues to build its lead. At 600 metres, it runs at 166 km/h versus 155 km/h. At 1,000 metres, the Bmw 320d finishes in 27.60 s versus 29.94 s, with a 2.35 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Bmw 320d is capped at 240 km/h, the CLA 180 Saloon at 218 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 (8.11 kg/hp vs 10.87 kg/hp) and transmission (Automatic vs Unknown).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 14.63 seconds. The 2.06 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, 320d G20 wins (6,83 s vs 8,89 s).

320d G20 goes from 0 to 100 km/h in 6,83 seconds (calibrated simulation).

320d G20: 190 hp, ratio 8,11 kg/hp. CLA 180 Saloon: 156 hp, ratio 10,87 kg/hp.

320d G20: 240 km/h. CLA 180 Saloon: 218 km/h.