Kia EV6 vs Audi A4: Running Costs UK 2026
Last updated: June 2026 · Based on current UK fuel prices
At 10,000 miles/yr · 80% home charging
+£863/yr
The Kia EV6 saves you approximately £863 per year in fuel costs.
Break-even on the higher purchase price: ~4.6 years
Audi A4 fuel cost
17.7p/mile
37 MPG · 143.9p/litre
Kia EV6 (home tariff)
7.4p/mile
3.8 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 | Audi A4 | Kia EV6 | EV saves |
|---|---|---|---|
| 8,000 | £1,414 | £724 | +£690 |
| 10,000(avg) | £1,768 | £905 | +£863 |
| 12,000 | £2,122 | £1,086 | +£1,035 |
| 15,000 | £2,652 | £1,358 | +£1,294 |
| 20,000 | £3,536 | £1,811 | +£1,726 |
Petrol: 143.9p/litre · Home electricity: 28p/kWh · Public rapid: 60p/kWh
Kia EV6 cost by charging scenario
Charging behaviour has more impact on EV running costs than almost any other variable. Here's how the Kia EV6 compares at 10,000 miles per year across four scenarios:
Overnight EV tariff
£184/yr · 1.8p/mile
Standard home (80% home)
£905/yr · 9.1p/mile
Mixed (50% home)
£1,158/yr · 11.6p/mile
Public charging only
£1,579/yr · 15.8p/mile
Saving vs Audi A4 at 10,000 mi/yr and 143.9p/litre.
Key specs
Kia EV6
Standard Range RWD
Audi A4
35 TFSI S Line
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 Kia EV6 cost to run per mile in the UK?
At a standard UK home electricity rate of 28p/kWh and a real-world efficiency of 3.8 miles/kWh, the Kia EV6 costs approximately 7.4p per mile when charging at home. On a dedicated overnight EV tariff (around 7p/kWh) this falls to just 1.8p per mile. Relying entirely on public rapid charging at 60p/kWh raises the cost to 15.8p per mile.
Is the Kia EV6 cheaper to run than the Audi A4?
Yes, for most UK drivers who can charge at home. The Audi A4 costs approximately 17.7p per mile in petrol at current UK prices. At home on a standard tariff, the Kia EV6 costs 7.4p per mile — a saving of 10.3p per mile. At 10,000 miles per year with 80% home charging, the Kia EV6 saves around £863 per year in fuel costs.
How long to break even switching from a Audi A4 to a Kia EV6?
Based on an estimated price premium of £4,000 for the Kia EV6 over the Audi A4, and annual fuel savings of approximately £863 at 10,000 miles per year (80% home charging), the break-even point is around 4.6 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 Kia EV6 at home?
Without home charging, the economics change significantly. Relying on public rapid charging at 60p/kWh puts the Kia EV6 at 15.8p per mile — still comparable to the Audi A4 at 17.7p per mile. EV running cost savings are almost entirely dependent on home charging access. Drivers without off-street parking should factor this in carefully.