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A318dvsBA3Diesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs318d · A3

BMW 318d Steptronic G20 vs Audi A3 Sedan

Trip mapped at a glance. Charging stops visible, total duration predictable. Caralogy simulation at 130 km/h.

saloon · 2019 vs 2026 · Paris → Marseille · 775 km · 130 km/h
BMWDieselPlus rapide

318d Steptronic G20

150 ch · 2019

VS
AudiDiesel

A3 Sedan

116 ch · 2026

Simulation trip
Assumptions: 130 km/h · start réservoir plein · mild weather

Result · total trip time

ABMW 318d Steptronic G20

7h01no stop

0 stops · 70.63 €

Gap5 minin favour of 318d Steptronic
BAudi A3 Sedan

7h06charging included

1 stop · 94.85 €

Paris → Marseille · 130 km/h · Caralogy simulation
Measure318d Steptronic G20A3 SedanGap
Total time7h017h065 min · 318d Steptronic G20
Charging stops0 stops1 stop1 stop · 318d Steptronic G20
Cost of energy used70.63 €94.85 €24.22 € · 318d Steptronic G20

Visualise the trip

Both vehicles drive at 130 km/h. The difference comes from charging stops.

BMWDieselFastest
318d Steptronic G20
100%
952 km
Range
Paris
0 km · departure
Marseille
775 km · Arrival 7h01
0
Stops
7h01
Duration
70.63 €
Cost of energy used
AudiDiesel
A3 Sedan
100%
718 km
Range
Paris
0 km · departure
Refuel 1
5 min · +41 L · 87.88 €
Marseille
775 km · Arrival 7h06
1
Stops
7h06
Duration
94.85 €
Cost of energy used

The 5-minute lead of the 318d Steptronic G20 does not come from driving speed, but from one fewer charging stop on this route (0 vs 1).

Both vehicles drove at 130 km/h for the entire trip. The gap is built at the stops: no stop for the 318d Steptronic G20 versus 1 stop of 5 min for the A3 Sedan.

Motorway consumption: the Caralogy methodology

The official WLTP figures (4,5 L/100km for 318d Steptronic G20 and 4,7 L/100km for A3 Sedan) are measured on a mixed cycle averaging ~46 km/h. At a steady 130 km/h, aerodynamic drag weighs much more heavily - it grows with the square of speed. Caralogy calculates a motorway consumption specific to each vehicle based on its aerodynamic profile (SCx), weight and power curve - not a uniform correction factor. For this trip, the simulation yields 4,2 L/100km (318d Steptronic G20) and 5,6 L/100km (A3 Sedan). Full methodology: see the assumptions below the controls.

Energy cost breakdown for your trip Paris → Marseille

The cost per kilometre depends on the electricity rate applied to each segment - based on the energy source used at that point of the trip.

BMW 318d Steptronic G20

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Marseillefuel · 2.17 €/L775 km33 L consumed0.091 €/km70.63 €
Trip total70.63 €

Audi A3 Sedan

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Manosque, A51fuel · 2.17 €/L718 km41 L consumed0.122 €/km87.88 €
Manosque, A51 → Marseillefuel · 2.17 €/L57 km3 L consumed0.122 €/km6.97 €
Trip total94.85 €

What produces these figures

WLTP combined consumption
4.5 L/100 km · 4.7 L/100 km
Fuel tank
40 L · 45 L

Compare with another vehicle

Replace one of the two with an alternative from the same segment

BMWDiesel

318d Steptronic G20

150 ch · 2019

AudiDiesel

A3 Sedan

116 ch · 2026

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Frequently asked questions

On Paris → Marseille (775 km at 130 km/h), the 318d Steptronic G20 arrives in 7h01 with 0 fuel stops.

WLTP consumption does not reflect motorway reality. Aerodynamic drag grows with the square of speed, so real consumption is 15 to 25 % higher than WLTP combined. Caralogy calculates a highway consumption specific to each vehicle based on its aerodynamic profile (SCx), weight and power curve.

Total time = driving time + charging time. Driving time is calculated at an average speed of 130 km/h on the motorway (adjustable). Charging time is calculated based on the real power curve of each vehicle, respecting the optimal 10 → 80 % range and the maximum power accepted by the chargers on the route.

No. The displayed cost covers only the energy consumed during the trip: kWh × energy rate, with a mix of home charging and DC fast chargers. Battery wear is a long-term ownership cost, not a trip cost.

On this trip, the energy used costs 70.63 € (318d Steptronic G20) and 94.85 € (A3 Sedan). For reference, an equivalent Peugeot 508 1.6 PureTech 180 (~7.2 L/100 km) would cost about 103 € in fuel.