When renting a car in Europe, you will often be asked to choose between a diesel and petrol (gasoline) vehicle. Unlike in North America where diesel passenger cars are rare, a significant portion of European rental fleets run on diesel. The choice matters more than you might think — it affects your fuel costs, where you can drive, and even the risk of an expensive misfuelling mistake.
Diesel cars have long been the default for European long-distance driving, and for good reason:
However, the diesel landscape in Europe is changing rapidly due to environmental concerns.
Petrol cars have gained ground in European rental fleets for several reasons:
Join smart travelers getting weekly car rental tips and deals â free.
This is the most important factor for 2026–2026 travel planning. Major European cities are increasingly restricting diesel vehicles:
Modern rental cars (manufactured after 2019) typically meet Euro 6d standards and are exempt from these bans. However, if you are renting from a smaller or budget operator with an older fleet, check the vehicle's emission standard before driving into restricted zones.
Fuel prices vary enormously across Europe. As a general guide:
| Country | Diesel (/litre) | Petrol (/litre) |
|---|---|---|
| Luxembourg | €1.35 | €1.45 |
| Spain | €1.45 | €1.55 |
| France | €1.65 | €1.75 |
| Germany | €1.55 | €1.70 |
| Italy | €1.60 | €1.75 |
| Netherlands | €1.75 | €2.00 |
| Norway | NOK 18.50 | NOK 19.00 |
Prices fluctuate significantly. Use apps like GasBuddy or Fuel Flash to find the cheapest stations along your route.
Putting petrol in a diesel car is one of the most expensive mistakes you can make with a rental car. It can cause €3,000–€8,000 in engine damage, and it is not covered by CDW or standard insurance. In Europe, diesel nozzles are often larger than petrol nozzles (the reverse of some other markets), but the colour coding varies by country:
Always check the label on the pump and your car's fuel cap. If driving between the UK and continental Europe, be especially careful as the colour coding is reversed.
For most European road trips in 2026–2026, we recommend a petrol car unless you are planning extensive motorway driving (2,000+ km) with minimal city stops. The misfuelling risk, emission zone complications, and narrowing fuel price gap make petrol the safer and simpler choice. If your trip is primarily rural and highway-based (e.g., a Scandinavian road trip), diesel still offers meaningful fuel savings.
Electric vehicles (EVs) are increasingly available in European rental fleets, especially from premium companies. They are ideal for city-based trips and countries with good charging infrastructure (Norway, Netherlands, Germany). However, for multi-country road trips, charging logistics can still be challenging, and not all rental companies allow cross-border EV travel due to charger network agreements.
Bookmark this guide and check back before your trip â car rental prices and policies change frequently.
Find the best deal from top providers across Europe.
Do not start the engine. If you realise the mistake before starting, call the rental company's roadside assistance immediately. They will drain the tank. If you start the engine and drive, the damage can cost 3,000-8,000 euros for injector and fuel system repairs. This is classified as driver negligence and is not covered by CDW or excess waiver insurance.
Diesel fuel is typically 5-15% cheaper per litre in most European countries, and diesel engines are 20-35% more fuel efficient. For a 3,000 km road trip, diesel saves roughly 50-100 euros in fuel. However, the price difference has narrowed significantly in recent years, and in some countries petrol is now cheaper per litre.
Modern rental cars (Euro 6d standard, manufactured after 2019) are generally exempt from current diesel restrictions. However, if you rent from a budget operator with an older fleet, check the vehicle's emission standard. When in doubt, choose a petrol car for city-heavy itineraries.
Look for the EU-standardised fuel labels: a circle with 'E5' or 'E10' for petrol, a square with 'B7' for diesel. Also check your rental car's fuel cap which should indicate the fuel type. Be aware that nozzle colours vary by country and can be confusing, especially between the UK and continental Europe.
EVs are great for single-country city trips, especially in Norway, Netherlands, or Germany where charging infrastructure is excellent. For multi-country road trips, the charging network is still inconsistent, and some rental companies restrict cross-border EV travel. Stick with petrol or diesel for long-distance multi-country itineraries.
Country-by-country driving requirements, packing list, and emergency contacts â all in one PDF.
Free download. No spam. Unsubscribe anytime.