Skip to main content
CaralogyCaralogy
HomeBrandsRoad TripBudgetDuelGuides
Caralogy

The car comparison platform. Physics simulation, road trips, real costs.

Navigation
All brandsCar duelRunning costsMotorwayMethodology
Simulators
Motorway simulatorRunning costsPerformance duel
Brands
VolkswagenBMWMercedesToyotaTeslaAudi
FRENDEESIT
© 2026 Caralogy · All rights reserved
  1. Home
  2. /Motorway
  3. /compact
A120dDieselvsBA3Petrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs120d · A3

BMW 120d F40 vs Audi A3 allstreet

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

compact · 2021 vs 2026 · Paris → Marseille · 775 km · 130 km/h
BMWDieselPlus rapide

120d F40

190 ch · 2021

VS
AudiPetrol

A3 allstreet

150 ch · 2026

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

Result · total trip time

ABMW 120d F40

7h01no stop

0 stops · 75.68 €

Gap5 minin favour of 120d
BAudi A3 allstreet

7h06charging included

1 stop · 108.98 €

Paris → Marseille · 130 km/h · Caralogy simulation
Measure120d F40A3 allstreetGap
Total time7h017h065 min · 120d F40
Charging stops0 stops1 stop1 stop · 120d F40
Cost of energy used75.68 €108.98 €33.30 € · 120d F40

Visualise the trip

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

BMWDieselFastest
120d F40
100%
1111 km
Range
Paris
0 km · departure
Marseille
775 km · Arrival 7h01
0
Stops
7h01
Duration
75.68 €
Cost of energy used
AudiPetrol
A3 allstreet
100%
694 km
Range
Paris
0 km · departure
Refuel 1
5 min · +45 L · 97.65 €
Marseille
775 km · Arrival 7h06
1
Stops
7h06
Duration
108.98 €
Cost of energy used

The 5-minute lead of the 120d F40 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 120d F40 versus 1 stop of 5 min for the A3 allstreet.

Motorway consumption: the Caralogy methodology

The official WLTP figures (4,7 L/100km for 120d F40 and 5,4 L/100km for A3 allstreet) 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 4,5 L/100km (120d F40) and 6,5 L/100km (A3 allstreet). 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 120d F40

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Marseillefuel · 2.17 €/L775 km35 L consumed0.098 €/km75.68 €
Trip total75.68 €

Audi A3 allstreet

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Manosque, A51fuel · 2.17 €/L694 km45 L consumed0.141 €/km97.65 €
Manosque, A51 → Marseillefuel · 2.17 €/L81 km5 L consumed0.140 €/km11.33 €
Trip total108.98 €

What produces these figures

WLTP combined consumption
4.7 L/100 km · 5.4 L/100 km
Fuel tank
50 L · 50 L

Compare with another vehicle

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

BMWDiesel

120d F40

190 ch · 2021

AudiPetrol

A3 allstreet

150 ch · 2026

Other duels you might be interested in

BMWVSAudi

120d vs A3 Sedan

BMWVSAudi

218i Coupé vs A3 allstreet

BMWVSAudi

120d vs A3 Sportback

AudiVSBMW

A3 allstreet vs 118i

Frequently asked questions

On Paris → Marseille (775 km at 130 km/h), the 120d F40 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 75.68 € (120d F40) and 108.98 € (A3 allstreet). For reference, an equivalent Peugeot 308 1.2 PureTech 130 (~6.8 L/100 km) would cost about 97 € in fuel.