Buying a Diesel Car...

Car Shopping Tips

While diesel cars made up 30% of the cars licenced in Great Britain in 2021, many drivers have never bought a diesel vehicle. While electric cars have gained popularity over the past year, it’s still worth looking into petrol and diesel while the UK hasn’t fully adapted to electric driving.

But how much do you know about purchasing a diesel car? There are some quite significant differences from petrol that you should know if you’re considering buying a used diesel car.

Best4 Warranty have put together the pros and cons of buying a used diesel car in 2022.


Fuel Efficiency: Diesel cars are more fuel efficient than traditional petrol cars in the long run. They generally use 15-20% less fuel which means you can save a massive 30% throughout the year.

CO2 Emissions: Even though diesel fuel contains slightly more carbon per litre than petrol, the overall CO2 emissions are lower by 20%.

Towing Caravans: Diesel engines tend to offer more torque than petrol-powered counter parts, this makes them a great option for towing caravans and trailers. (Fun fact: This is why they are favoured in the farming industry!).

Depreciation: A diesel vehicle can be better value for your money as they depreciate on the market at a lower rate.v

Longer Life Span: A diesel car’s engine needs less maintenance meaning you’ll save money. The car itself will also last longer so when you do resell, you’ll get a better deal.


Short Trips/City Driving: Diesel cars are less suited for short trips and driving in the inner city. Driving at a low speed and for short distances can quickly clog up your Diesel Particulate Filter.

London Driving Legislation: Since October 2021, you may be obliged to pay a £12.50 daily fee to drive in the centre of London with a diesel car.

Expensive to Fuel: Diesel vehicles tend to be slightly more expensive than petrol, but only by a few pence. That said, while you’re likely to pay more to fill up your tank, the fuel economy savings cancel out the extra cost making diesel cars cheaper in the long run.

Expensive: Diesel cars, most of the time, are more expensive than petrol cars. A key reason is that diesel engines usually require extra hardware that petrol ones don’t.

Driving Experience: Diesel engines tend to be noisier than petrol due to their high running pressure. However, recent developments have been made to reduce this on newer models.

Servicing: Servicing can be more expensive than purchasing a petrol car, although you do not need to get the vehicle serviced as often.

Insurance: Insurance can be between 10-15% higher than petrol vehicles.

Buying a diesel car depends on what you will be using the car for and for how long you decide to keep the vehicle. If you’re planning on buying a car for the odd trip to the shops or around a busy city centre, then a diesel may not be best suited for you. On the other hand, if you’re likely to be making a lot of long journeys on motorways or plan on staycation-ing with your caravan over the summer, then it might be worth looking to invest in a used diesel car.

If you already own a used diesel car, they why not get yourself a free, no obligation Best4 Warranty quote today!

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