Polestar 2 vs BMW 3 Series: Running Costs UK 2026
Last updated: June 2026 · Based on current UK fuel prices
At 10,000 miles/yr · 80% home charging
+£653/yr
The Polestar 2 saves you approximately £653 per year in fuel costs.
Break-even on the higher purchase price: ~12.3 years
BMW 3 Series fuel cost
16.4p/mile
40 MPG · 143.9p/litre
Polestar 2 (home tariff)
8.0p/mile
3.5 mi/kWh · 28p/kWh
Annual fuel cost comparison
The table below uses real-world efficiency figures for both vehicles and current UK fuel prices. EV costs assume 80% home charging (28p/kWh) and 20% public rapid charging (60p/kWh).
| Miles/yr | BMW 3 Series | Polestar 2 | EV saves |
|---|---|---|---|
| 8,000 | £1,308 | £786 | +£522 |
| 10,000(avg) | £1,635 | £983 | +£653 |
| 12,000 | £1,963 | £1,179 | +£783 |
| 15,000 | £2,453 | £1,474 | +£979 |
| 20,000 | £3,271 | £1,966 | +£1,305 |
Petrol: 143.9p/litre · Home electricity: 28p/kWh · Public rapid: 60p/kWh
Polestar 2 cost by charging scenario
Charging behaviour has more impact on EV running costs than almost any other variable. Here's how the Polestar 2 compares at 10,000 miles per year across four scenarios:
Overnight EV tariff
£200/yr · 2.0p/mile
Standard home (80% home)
£983/yr · 9.8p/mile
Mixed (50% home)
£1,257/yr · 12.6p/mile
Public charging only
£1,714/yr · 17.1p/mile
Saving vs BMW 3 Series at 10,000 mi/yr and 143.9p/litre.
Key specs
Polestar 2
Long Range Single Motor
BMW 3 Series
320i Sport
Get a personalised result for your actual mileage
The figures above use national average fuel prices. Enter your postcode to get live local prices, or adjust the MPG and efficiency for your specific trim level.
Open calculator pre-filled for this comparisonFrequently asked questions
How much does a Polestar 2 cost to run per mile in the UK?
At a standard UK home electricity rate of 28p/kWh and a real-world efficiency of 3.5 miles/kWh, the Polestar 2 costs approximately 8.0p per mile when charging at home. On a dedicated overnight EV tariff (around 7p/kWh) this falls to just 2.0p per mile. Relying entirely on public rapid charging at 60p/kWh raises the cost to 17.1p per mile.
Is the Polestar 2 cheaper to run than the BMW 3 Series?
Yes, for most UK drivers who can charge at home. The BMW 3 Series costs approximately 16.4p per mile in petrol at current UK prices. At home on a standard tariff, the Polestar 2 costs 8.0p per mile — a saving of 8.4p per mile. At 10,000 miles per year with 80% home charging, the Polestar 2 saves around £653 per year in fuel costs.
How long to break even switching from a BMW 3 Series to a Polestar 2?
Based on an estimated price premium of £8,000 for the Polestar 2 over the BMW 3 Series, and annual fuel savings of approximately £653 at 10,000 miles per year (80% home charging), the break-even point is around 12.3 years. Drivers covering more miles will reach break-even sooner — at 15,000 miles per year the saving is proportionally larger.
What if I can't charge the Polestar 2 at home?
Without home charging, the economics change significantly. Relying on public rapid charging at 60p/kWh puts the Polestar 2 at 17.1p per mile — higher than the BMW 3 Series at 16.4p per mile. EV running cost savings are almost entirely dependent on home charging access. Drivers without off-street parking should factor this in carefully.