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A318iPetrolvsB318dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs318i · 318d

BMW 318i Touring G20 vs BMW 318d Touring G20: 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 · 2020 vs 2019 · Methodology
BMWPetrolFaster

318i Touring G20

156 hp · 250 Nm · 1,570 kg · 2020

VS
BMWDiesel

318d Touring G20

150 hp · 320 Nm · 1,575 kg · 2019

Result · 0–100 km/h

ABMW 318i Touring G20

8.57 s

Gap0.18 sin favour of 318i Touring
BBMW 318d Touring G20

8.75 s

Summary · Caralogy simulation
Measure318i Touring G20318d Touring G20Gap
0–100 km/h8.57 s8.75 s0.18 s · 318i Touring G20
400 m standing start16.24 s16.26 s0.02 s · 318i Touring G20
1,000 m standing start29.74 s30.02 s0.28 s · 318i Touring G20
Top speed (electronically limited)220 km/h217 km/h3 km/h · 318i Touring G20
Power-to-weight ratio10.06 kg/hp10.50 kg/hpbetter ratio · 318i Touring G20

Watch the race

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

BMWPetrol318i Touring G20
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel318d Touring G20
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.
Stage318i Touring G20318d Touring G20
0–30 km/h1.70 s1.40 s
0–50 km/h2.97 s2.74 s
0–80 km/h5.87 s5.87 s
0–100 km/h8.57 s8.75 s
0–120 km/h12.04 s12.57 s
0–160 km/h22.62 s23.91 s
0–200 km/h45.71 s49.93 s
400 m standing start16.24 s · tight gap16.26 s
1,000 m standing start29.74 s30.02 s
Top speed220 km/h217 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

318i Touring G20

10,06kg/hpratio better by 0,44 kg/hp
CharacteristicValueDetail
Power156 hp4 cyl
Torque250 Nm
Weight1 570 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission
BMW

318d Touring G20

10,50kg/hp
CharacteristicValueDetail
Power150 hpPending
Torque320 Nm
Weight1 575 kgmanufacturer kerb weight
Drivetrain-
GearboxSix-speed manual (eight-speed Steptronic transmission)

The start: 0 to 100 km/h

Off the line, the 318i Touring hits 100 km/h in 8.57 s versus 8.75 s for the 318d Touring. Despite the faster sprint time, the 318d Touring 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 318d Touring is doing 110 km/h against 112 km/h for the 318i Touring. The gap is 0.11 s. The gap remains stable from the start.

At 400 metres standing start, the 318i Touring crosses the line in 16.23 s versus 16.26 s. The 0.02 s gap represents roughly 1 m of track

Beyond 400 metres: top speed comes into play

Past 400 metres, the 318i Touring continues to build its lead. At 600 metres, it runs at 156 km/h versus 153 km/h. At 1,000 metres, the 318i Touring finishes in 29.74 s versus 30.02 s, with a 0.28 s lead. Both vehicles have similar top speeds (220 vs 217 km/h), preventing any comeback.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the 318i Touring is capped at 220 km/h, the 318d Touring at 217 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 (10.06 kg/hp vs 10.50 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 14.87 seconds. The 0.18 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 318i Touring G20
Audi A5 Avant
Instead of 318d Touring G20
Audi A5 AvantAudi A5 Avant

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Frequently asked questions

Over 0–100 km/h, 318i Touring G20 wins (8,57 s vs 8,75 s).

318i Touring G20 goes from 0 to 100 km/h in 8,57 seconds (calibrated simulation).

318i Touring G20: 156 hp, ratio 10,06 kg/hp. 318d Touring G20: 150 hp, ratio 10,50 kg/hp.

318i Touring G20: 220 km/h. 318d Touring G20: 217 km/h.