EV Charging Costs vs Petrol — Total Cost of Ownership for Finance Buyers in 2026
💡 Key Takeaway
Is an EV really cheaper to run than a petrol car? Here's the real total cost of ownership maths for UK finance buyers in 2026 — including Reading and Berkshire context.
Monthly finance is only half the cost of running a car. Fuel, insurance, road tax, maintenance and depreciation all add up — and the maths look very different for an EV versus a petrol equivalent in 2026.
Here's the honest total-cost-of-ownership picture for UK finance buyers this year.
The setup
Let's compare two realistic 2026 finance deals over 3 years with 10,000 miles a year:
Petrol option: Mid-spec family SUV, £32,000 list, PCP at £390/month EV option: Equivalent electric SUV, £36,000 list, PCP at £420/month after manufacturer subvention
The EV is £30/month more on finance — but the running costs tell a different story.
Fuel vs electricity
Petrol option
- 40 mpg average
- £1.40/litre average
- ~£1,590 per year fuel cost
- £4,770 over 3 years
EV — home charging
- 3.5 miles/kWh efficiency
- 10p/kWh on Economy 7 overnight rate
- ~£285 per year
- £855 over 3 years
EV — mostly public charging
- 50p–80p/kWh on rapid networks
- ~£1,710–£2,742 per year
- £5,130–£8,226 over 3 years
🔌 The EV fuel saving is huge if you charge at home. It can be negative if you charge mostly on public networks.
Road tax (VED)
From April 2025, EVs pay road tax in the UK — the previous exemption ended.
Petrol family SUV (2026):
- First year: ~£800
- Years 2 and 3: £190 per year
- 3-year total: £1,180
EV family SUV (2026):
- First year: £10
- Years 2 and 3: £190 per year
- 3-year total: £390
🛡️ Cars over £40,000 list pay an additional £410/year supplement for 5 years — applies to both EV and petrol now.
Insurance
A genuine gap: EV insurance is typically 10–25% higher than petrol equivalents in 2026, mainly because:
- Repair complexity is higher
- Some insurers price battery damage cautiously
- Specialist EV repair networks are still building out
A realistic comparison:
- Petrol SUV: £700/year × 3 = £2,100
- EV SUV: £900/year × 3 = £2,700
Service and maintenance
EVs win clearly here:
- No oil changes
- No spark plugs, exhaust, timing belt
- Brake pads last longer (regenerative braking)
- Fewer moving parts
Typical 3-year service costs:
- Petrol SUV: £1,500
- EV SUV: £900
Putting it together (3 years, home-charging EV)
| Cost | Petrol | EV (home charge) | |---|---|---| | Finance | £14,040 | £15,120 | | Fuel/electricity | £4,770 | £855 | | Road tax | £1,180 | £390 | | Insurance | £2,100 | £2,700 | | Service | £1,500 | £900 | | 3-year total | £23,590 | £19,965 |
The home-charging EV is ~£3,600 cheaper over 3 years despite higher finance cost.
The same maths for a mostly-public-charging EV
If you can't charge at home and rely on public rapid chargers, the fuel saving disappears:
| Cost | Petrol | EV (public charge) | |---|---|---| | Finance | £14,040 | £15,120 | | Fuel/electricity | £4,770 | £6,840 | | Road tax | £1,180 | £390 | | Insurance | £2,100 | £2,700 | | Service | £1,500 | £900 | | 3-year total | £23,590 | £25,950 |
The EV is now ~£2,400 more expensive over 3 years.
The honest verdict
✅ Home charging → EV is meaningfully cheaper ❌ Public charging only → petrol is cheaper 🟡 Mixed (80% home, 20% public) → roughly break-even
Other factors that tilt the maths
✅ Salary sacrifice — flips the EV case heavily in EV's favour for higher-rate taxpayers ✅ Workplace charging — even free occasional charging shifts the maths ✅ Solar at home — near-free electricity makes EV unbeatable 🛑 High annual mileage — amplifies fuel cost differences either way 🛑 Flat / no off-street parking — pushes you to public charging, hurts EV case
Talk to WFYA
The right finance choice depends on the right car for your circumstances. We can run real numbers on petrol vs EV options before you commit.
📞 Buyers across Reading, Berkshire and the UK use We Finance Your Asset to compare both sides honestly. One call usually clarifies which actually saves you money.