E10 petrol in Ireland: what changed and what it means for your car
Ireland switched its standard petrol to E10 in 2023. Which cars are affected, why E5 is hard to find, and what owners of older and classic cars can do.
Updated 25 October 2026
What changed
Under the Renewable Transport Fuel Obligation, Irish fuel suppliers replaced E5 with E10 as the standard petrol in 2023. The regulations took effect in April 2023 and the switch at forecourts was completed around 1 July 2023. Diesel was not affected.
Which cars are affected?
Every new petrol car sold in Europe since 2011 is built for E10, and most cars from the early 2000s are too. The Government has said that some pre-2011 cars, mostly pre-2003, were never certified for E10, and estimated these at around 2.4% of the fleet, with vintage and classic cars under 1%. Check your make with the E10 checker.
The big difference from the UK: E5 is hard to find
In the UK, E5 stays on sale as "super" unleaded. In Ireland, the Government said most suppliers do not have the storage to sell both grades, so E5 is generally not available at Irish forecourts. Specialist supply may exist where there is demand. That makes the options below more important for owners of non-approved cars.
Options if your car is not approved for E10
- Check first. Many cars people worry about are in fact approved. Look in the fuel flap, the handbook and your manufacturer's statement.
- Fuel-system check. Ask a mechanic or specialist to inspect rubber fuel hoses, seals and carburettor parts, and replace them with ethanol-resistant parts where needed.
- Keep the tank fresh. Use fuel within weeks, not months, and avoid leaving E10 standing in a laid-up car.
- Ask your owners' club about specialist E5 or ethanol-free fuel and about additives (additives can help stability, but do not make a car "approved").
Check your car in 10 seconds
Pick your make and year for the manufacturer's E10 answer.
Frequently asked questions
Can I still buy E5 petrol in Ireland?
Generally not at ordinary forecourts since 2023. Specialist suppliers may offer it; ask a classic car club.
Will E10 damage my older car?
A non-approved car will usually run on E10, but over time ethanol can harm older seals and hoses. Have the fuel system checked and replace perished parts.
Is my 2005 car OK on E10?
Most cars from that era are approved. Check your make in our checker; some early direct-injection engines are excluded.
Sources
- Oireachtas – Parliamentary question on E10 petrol (22 March 2023) (checked 25 October 2026)
- Oireachtas – Parliamentary question on E10 petrol (3 May 2023) (checked 25 October 2026)
- GOV.UK – Check if your vehicle can use E10 petrol (checked 25 October 2026)
Related guides
- What is E10 petrol? A plain-English guide
- E10 in lawnmowers, chainsaws, outboards and other small engines
- How long does E10 petrol last? Storage tips
General information only. Always follow your vehicle handbook and the manufacturer's advice.