The i30 Owners Club

Diesel or Petrol - A Cost Comparison

AlanHo · 1 · 1292

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Offline AlanHo

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      Solihull, UK

  • KIA Niro 2 1.6 Petrol Hybrid
There is an interesting piece on the Honest John web site which compares the ownership costs of a range of petrol versus diesel cars. They come up with the astonishing conclusion that you need to drive a 1.4 diesel golf 316,000 miles before it reaches break-even with the 1.0 petrol turbo.

:link: Petrol or diesel in 2016? | Motoring News | Honest John

Before I bought my latest Venga - being an anorak - I did a an overall cost comparison of the 1.6 diesel and the 1.6 petrol Venga 3 manuals.

Inspired by Honest John I have just updated it with the latest fuel prices in my area, the lowest new car costs I found on the web and the latest insurance quotes I recently obtained for myself and wife driving 11,000 miles/year.

For fuel economy I used 53 mpg for the diesel car listed on the KIA forum
I used 42 mpg for the manual petrol car (which was my experience with my first Venga accurately calculated from total fuel added during a total miles covered of 17,864 miles).
My current auto Venga has averaged 38 mpg over its first 18870 miles

This is the data.

Venga 3 1.6 Petrol manual  OTR Price £ 13870  VED £130  Insurance £264  Economy 42 mpg

Venga 3 1.6 Diesel manual  OTR Price £14945  VED £30     Insurance £292  Economy 53 mpg

Venga 3 1.6 Petrol Auto      OTR price £14,990  VED £145  Insurance  £249  Economy 38 mpg

Current fuel prices in my area: Petrol £4.55/gall  Diesel £4.77/gall

To save you doing the maths, using the above figures :-

You need to do 40,443 miles before you reach a break-even point when you buy a manual diesel rather than a manual petrol Venga 3.

In my case - I bought an auto Venga and the manual diesel would have worked out cheaper from the word go.  There is not a Venga auto diesel for me to make a comparison with - but if there were - it's a safe bet that the £1000 higher price would result in a similar break-even calculation

I do about 11,000 miles/year - hence it would take me almost 4 years before the diesel car started to pay for itself in terms of running costs. I normally change my cars every 2 years - I don't need loads of grunt because I don't tow a trailer or caravan and a manual petrol for me is a no brainer.

Finally - I stress that the above figures are based upon my situation and the current local costs. People in other areas will have a different comparison.
  • 2017 KIA Niro 2 1.6 petrol Hybrid

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