BMWPHEV
320e G20
204 ch · 11.2 kWh · 2021
Motorway range comparison
Trip mapped at a glance. Charging stops visible, total duration predictable. Caralogy simulation at 130 km/h.
Paris → Marseille · 130 km/h · Caralogy simulation
| 320e G20 | 318d Steptronic G20 | |
|---|---|---|
| Total time | 7h06 | 7h01−5 min |
| Charging stops | 1 stop | 0 stops−1 stop |
| Total cost | 139,74 € | 64,77 €−74,97 € |
Both vehicles drive at 130 km/h. The difference comes from charging stops.
Analysis
Both vehicles drove at 130 km/h for the entire trip. The 318d Steptronic G20 (combustion) makes no stop, the 320e G20 (plug-in hybrid) 1 stop of 5 min. Road safety reminder: on a trip of this duration, it is recommended to stop for at least 51 min total (17 min every 2h). The energy cost is 139,74 € for 320e G20 versus 64,77 € for 318d Steptronic G20.
The official WLTP figures (14,8 kWh/100km for 320e G20 and 4,5 L/100km for 318d Steptronic G20) 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 9,6 L/100km (320e G20) and 4,2 L/100km (318d Steptronic G20). Full methodology: see the dedicated button above the summary.
On a 200 km round trip (e.g. a weekend getaway), the electric or plug-in hybrid vehicle completes the entire journey on home energy at 0.18 €/kWh — with no charging stop. The time advantage of the combustion car on long-distance motorways disappears entirely, and the economic advantage of electric strengthens considerably.
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.
| Segment | Distance | €/km | Cost |
|---|---|---|---|
| Paris → Limonest, A6initial energy charged at home · 0,21 €/kWh | 52 km8 kWh consumed | 0,031 €/km | 1,62 € |
| Paris → Limonest, A6fuel · 1,99 €/L | 375 km36 L consumed | 0,191 €/km | 71,64 € |
| Limonest, A6 → Marseillefuel · 1,99 €/L | 348 km33 L consumed | 0,191 €/km | 66,48 € |
| Trip total | 139,74 € | ||
| Segment | Distance | €/km | Cost |
|---|---|---|---|
| Paris → Marseillefuel · 1,99 €/L | 775 km33 L consumed | 0,084 €/km | 64,77 € |
| Trip total | 64,77 € | ||
Replace one of the two with an alternative from the same segment
204 ch · 11.2 kWh · 2021
150 ch · 2019
On Paris → Marseille (775 km at 130 km/h), the 318d Steptronic G20 arrives in 7h01 with 0 stop.
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.
Electric: 139,74 € (320e G20) and 64,77 € (318d Steptronic G20). An equivalent petrol SUV (~8 L/100 km) would cost about 115 € in motorway fuel. Electric costs less in energy but adds charging stops.