Which Powertrain & How Much? - Energy Costs Compared
BEV, PHEV, Petrol, Diesel:
Annual mileage 7,100 (UK Average 2024)
Annual Energy Costs for 7,100 miles (£GBP):
- BEV: £142 (all electric at 3.5 mi/kWh) 7p/kWh 100% Home Charging
(Excluding Standing Charges)
- BEV: £337 (80% at 7p/kWh Home Charging, 20% at 55p/kWh
(Excluding Standing Charges)
Public Charging at a TESLA Open to other EV V4 SUPERCHARGER, (3.5 mi/kWh)
- PHEV: £401 (75% electric at 3 mi/kWh, 25% petrol at 40 mpg)
- Petrol car: £982 (45 mpg, 1.37 GBP/litre)
- Diesel car: £857 (55 mpg, 1.46 GBP/litre)
notes:
BEV Battery Electric Vehicle vs a PHEV with an electric range of 50 Miles, a petrol car with a MPG OF 45 mpg and a Diesel car with a MPG of 55 Mpg. The BEV and PHEV can charge at home at a tariff of 7p/kWh.
Standing Charge SC around £200 per annum. TESLA Charging prices vary. 55p/kWh Average 2025. Petrol & Diesel Prices vary by grade and location. UK Prices Correct @ December 2025
Annual CO2 emissions for 7100 miles (kg):
- BEV: 495 (WTW at 244 g/kWh, 3.5 mi/kWh)
- PHEV: 990 (75% electric at 3 mi/kWh, 25% petrol at 40 mpg)
- Petrol car: 1980 (45 mpg, 2.76 kg/litre)
- Diesel car: 1785 (55 mpg, 3.04 kg/litre)