Petrol, diesel or electric car hire – three little words that can make your head spin at the rental desk. Which one saves you money? Which one won’t leave you stranded on the M25? And which one is actually allowed in London’s ULEZ?

Here’s the short version: Pick petrol for short, flexible drives. Pick diesel for long motorway cruises, but watch out for clean air charges. Pick electric for the city that has charging nearby. Read on for the real-world pros, cons, and sneaky costs – plus how to avoid getting ripped off by refuelling policies at the UK airport.

Petrol Hire Cars – The No Fuss Choice

Petrol is everywhere. Every motorway service station, every village garage. You don’t need a map to find a pump, and you won’t panic when the fuel light blinks. 

But watch out for rental car fuel economy, because petrol burns faster than diesel, especially on motorways. If you’re driving over 200 miles, expect to refill more often.

Best for: City trips, Lake District weekends, or when you’re in a hurry.

Worst for: Long cross‑country drives (your wallet will cry).

Diesel Hire Cars – The Motorway King

Diesel engines love long distances. They give you better diesel vs petrol running costs – more miles per litre, fewer stops at the pump.

However, diesel cars can feel noisier and slower off the line. And not every rental counter has them. If you’re searching for airport car hire fuel options at Heathrow or Manchester, ask specifically for a Euro 6 diesel. They’re usually ULEZ-compliant and often kept for premium or long‑term rentals.

Best for: Road trips over 300 miles (e.g., London to Glasgow)

Worst for: Short, stop‑and‑go city driving (Central London, Birmingham, or any city with clean air charges).

Electric Hire Cars – The Future

Thinking green? Searching for an electric car rental near me on Zap-Map or Google Maps will usually show plenty of options at major airports. When you rent a car electric vehicle, you pay zero for fuel, but you trade time for money.

Two big worries:

1. Electric hire car range anxiety – the fear of running out of battery on the M6 with no plug in sight.
2. Rental car charging time – even a fast charger takes 30 minutes for an 80% top‑up. A home 7kW outlet? 7-8 hours.

The fix? Plan ahead. Use apps to find EV charging station rental car networks. And if you’re staying in a hotel, call ahead to ask about chargers.

Best for: City trips (London, Bristol, Manchester) or short trips under 150 miles.

Worst for: Remote areas or tight deadlines.

The Secret Weapon: Hybrid Rental Cars

Not ready to go full electric? Hybrid rental car availability is growing fast. Hybrids switch between petrol and battery automatically, with no plug needed. You get amazing fuel economy without any range stress. Plus, most hybrids are ULEZ and CAZ-exempt.

Best for: “I want low fuel bills, no charging headaches, and free entry to clean air zones.”

Quick Comparison Table

Feature	Petrol	Diesel	Electric
Best For	Short Trips / City	Long Motorways	Eco-Conscious
Availability	Very High	High	Growing
Refuel Speed	5 mins	5 mins	30-60 mins
ULEZ / CAZ costs	Most are fine	Only Euro 6 exempt	Full exemption
Range Anxiety	None	None	Yes, for real
Running cost per mile	Medium/High	Low (on long motorways)	Lowest (if charged at home)

Don’t Ignore the Fine Print

Before you drive off, read the rental car refuelling policy. Some companies, like Hertz or Sixt, demand a full tank on return. Others offer rental car fuel reimbursement, where you prepay for fuel and bring it back empty. That’s convenient, but rarely cheaper.

For electric cars, policies vary wildly. Some ask for 80% battery. Others don’t care as long as you pay a £15–£30 fee. Always check your rental agreement.

The Final Verdict

If you choose…	Choose…
No learning curve, any village garage	Petrol
Best motorway mileage	Diesel
Zero fuel bills, no ULEZ tax, city driving	Electric
Best of both worlds (low cost + no range fear)	Hybrid

So next time you’re at Heathrow, Manchester, or Edinburgh counter, remember: petrol, diesel or electric car hire isn’t about right or wrong. It’s about matching the car to your trip. Drive smart, read the policy, and enjoy the ride.

Next time you need a rental, just ask yourself one question: Which petrol, diesel or electric car hire fits my journey today? Book the one according to your journey and stop thinking about it. 

FAQs

What’s the difference between petrol and diesel cars?

Look at the fuel cap; it usually says “Petrol” or “Diesel” clearly. Also, check the rental agreement or ask the hire desk, they’ll show you. When you book petrol, diesel or electric car hire, the fuel type is always listed in your confirmation email.

Which is a better fuel, diesel or petrol?

It depends on your driving. Diesel gives better diesel vs petrol running costs on long motorway trips. Petrol is cheaper to refill and works fine for short city drives.

Is an electric car better than a petrol car?

For city driving and zero tailpipe emissions, electric wins. But petrol cars have no electric hire car range anxiety and refuel in minutes. Whatever you choose depends on your journey and charging access. 

Which car has better mileage, a petrol car or a diesel car?

Diesel cars almost always give better mileage, especially on motorways. That means fewer stops and lower rental car fuel economy costs per mile. Petrol only beats diesel in very short, stop‑start journeys.

Is diesel more eco-friendly than electric?

No, electric is much cleaner overall. Diesel still produces CO₂ and local air pollution, while electric has zero tailpipe emissions. If you find an electric car rental near me, you’re choosing the greener option.

Is it better to get an electric car than a diesel car?

For city trips and avoiding ULEZ charges, yes – electric is better. For very long motorway journeys with no charging stops, diesel still makes sense. When you rent a car electric vehicle, just plan your charging breaks.

Are EVs more costly to hire?

Sometimes upfront, but often cheaper overall. Daily rates for EVs can be similar to petrol, and you save on fuel. Plus, many monthly electric car rental deals bring the price down significantly.

What usually goes wrong with electric car hires?

The biggest issue is returning with a low battery and facing a fee. Another common problem is not finding a working EV charging station rental car before drop‑off. Always check the rental car charging time needed to reach the return location.

Which car is better to buy, an electric or petrol?

If you mostly drive locally and can charge at home, an electric vehicle saves money long‑term. If you take frequent long trips or live in a flat with no charger, petrol is more practical. Test both through petrol, diesel, or electric car hire first to see what fits your life.

What’s the lifespan of an electric car?

Most electric car batteries last 10–15 years or over 100,000 miles. That’s similar to a well‑maintained petrol or diesel engine. Many hire companies offer hybrid rental car availability as a bridge if you’re worried about battery life.