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. /saloon
AM340iHybridvsB318iPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsM340i · 318i

BMW M340i xDrive G20 vs BMW 318i G20

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

saloon · 2020 vs 2020 · Paris → Marseille · 775 km · 130 km/h
BMWHybrid

M340i xDrive G20

382 ch · 2020

VS
BMWPetrol

318i G20

156 ch · 2020

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

Result · total trip time

ABMW M340i xDrive G20

7h01no stop

0 stops · 99.22 €

GapLess than a minute apart
BBMW 318i G20

7h01no stop

0 stops · 82.41 €

Paris → Marseille · 130 km/h · Caralogy simulation
MeasureM340i xDrive G20318i G20Gap
Total time7h017h01Less than a minute apart
Charging stops0 stops0 stopsSame
Cost of energy used99.22 €82.41 €16.81 € · 318i G20

Visualise the trip

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

BMWHybrid
M340i xDrive G20
100%
1000 km
Range
Paris
0 km · departure
Marseille
775 km · Arrival 7h01
0
Stops
7h01
Duration
99.22 €
Cost of energy used
BMWPetrol
318i G20
100%
1204 km
Range
Paris
0 km · departure
Marseille
775 km · Arrival 7h01
0
Stops
7h01
Duration
82.41 €
Cost of energy used

Very close result: less than one minute apart on this route. Both vehicles are evenly matched on the motorway over this distance.

Both vehicles drove at 130 km/h for the entire trip. The gap is built at the stops: no stop for the M340i xDrive G20 versus no stop for the 318i G20.

Motorway consumption: the Caralogy methodology

The official WLTP figures (7,0 L/100km for M340i xDrive G20 and 5,7 L/100km for 318i 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 5,9 L/100km (M340i xDrive G20) and 4,9 L/100km (318i G20). 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 M340i xDrive G20

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Marseillefuel · 2.17 €/L775 km46 L consumed0.128 €/km99.22 €
Trip total99.22 €

BMW 318i G20

SegmentEnergy usedDistanceConsumption€/kmCost (€)
Paris → Marseillefuel · 2.17 €/L775 km38 L consumed0.106 €/km82.41 €
Trip total82.41 €

What produces these figures

WLTP combined consumption
7.0 L/100 km · 5.7 L/100 km
Fuel tank
59 L · 59 L

Compare with another vehicle

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

BMWHybrid

M340i xDrive G20

382 ch · 2020

BMWPetrol

318i G20

156 ch · 2020

Other duels you might be interested in

BMWVSAudi

M340i xDrive vs A5 Avant e-hybrid quattro 270 kW

BMWVSAudi

318i vs A5 Avant

BMWVSAudi

M340i xDrive vs A5 Sedan e-hybrid quattro 270 kW

BMWVSAudi

318i vs A5 Sedan

Frequently asked questions

On Paris → Marseille (775 km at 130 km/h), the M340i xDrive 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 99.22 € (M340i xDrive G20) and 82.41 € (318i G20). For reference, an equivalent Peugeot 508 1.6 PureTech 180 (~7.2 L/100 km) would cost about 103 € in fuel.