Diesel versus Petrol – Choose your engine

March 13, 2015

In today’s world, one of the first questions you should ask when buying a new car is “should I buy a petrol or diesel?” Here, we have explained how to figure out which is best in terms of money and driving experience!

It’s not easy to decide between petrol or a diesel engine car- it’s a tough choice. Boasting superior fuel economy and lower road tax; diesels have been more popular among business drivers. The diesel powered car era started in the early 1980s. However Petrol is mostly known for its smooth and quiet driving!


  • Purchase cost
  • Residual Value
  • Fuel economy and tax costs

A quick look at the pros and cons of petrol and diesel engines:

Financial More efficient than petrol and use 15-20% less fuel. Diesel fuel is more expensive than petrol and vehicle purchase prices are also higher than petrol.
Environmental Diesel cars emit less CO2 than petrol. Diesel fuel produces tiny particles that have been linked to breathing disorders like Asthma.
Economy Offers greater efficiency and CO2 emissions are 20% lower than petrol and are rewarded with lower tax bands than petrol.
Driving Experience Offers low-speed torque with better overtaking power. Diesel engines could be slightly noisier than petrol; however this depends on the car and its technology.
Financial Petrol is cheaper than diesel and the cars are slightly cheaper to buy than diesel cars. Less efficient and use more fuel than diesel.
Driving Experience Petrol engines drive smoothly and are more refined, so less noisy.
Environmental Petrol engine cars emit more CO2 than diesel cars.

Which one is better for you? Which will cost you less in the long run? 

  • Which one is cheaper to buy?

Find the car that saves you moneyGenerally, diesel engine cars are a bit more expensive than petrol engines. However their amazing fuel efficiency and lower CO2 emissions save you money in road tax and overall mileage. For business drivers, diesel is an appropriate option.

Petrol cars are economical and around 10% cheaper to buy. If you are a small city car lover, then you are likely to get the smaller 1.0 to 1.4 petrol engine which offers an amazing fuel economy and low CO2 emissions. 

  • Which one is better to drive?

Drive slower and saferDiesel: We have heard plenty of times; diesels are slower, noisier and dirtier than petrol engines. These are myths. A new generation of turbo powered diesel engines are proving to be a strong match with petrol engines.

Petrol: Petrol cars are quieter, smoother and some would say “better” to drive than diesels. For a more exciting drive, it’s hard to ignore the racier nature of most petrol cars. The overall driving experience is much better in petrol engine cars.

  • Which one is better in terms of fuel economy?

Fuel economy is the important part to checkDiesel: If you are a business driver or more likely to travel on motorways and take long journeys; you should go for diesel.

Diesels are bit more expensive and fuel prices are higher than petrol, but they offer great fuel efficiency that will save you money overall. Diesel cars have low CO2 bands which mean low annual road tax. Take a look at our best executive cars of 2015 blog post for some inspiration!

Petrol: If you are a local driver doing short journeys and if your mileage is low- petrol cars might be more suitable for you.

  • Residual values of petrol and diesel cars –

Finf the car that hold a better resale valueDiesel cars tend to hold a better resale value than petrol cars. Diesels are currently in high demand and people are looking for cars with better fuel economy and lower road tax.

Still not sure? If you are looking to get a new vehicle but aren’t clear which one would be best for you then speak to one of our friendly sales team!