For the last few weeks I've been doing a little experiment comparing MPG on Tesco and BP diesel in my car.. I heard poeple saying you get better MPG from the higher quality fuels but have never seen it myself (or looked if I'm honest)

Anyhow the car is a 2010 Kia C'eed SW 1.6 CRDi.

Since we've had it we've been running it on Tesco Diesel, purely based on price per litre, and have been consistantly getting 40mpg and the weeks driving mostly made up of town / shopping / school run type driving so probably the worst you can get for good MPG..

For the last 2 tanks I have filled up with BP fuel, which is 2p per litre more expensive locally, so costing around a pound more to fill up 50 ltrs. Almost right away, after resetting everything, the computer was showing and increase in MPG and also tank range but working it out from the milage and amount of fuel when I fill up, both tank fulls of BP have returned 44 mpg.. Both BP tank fulls were also used for the same style of driving as before..

So for every 10 gallons I'm getting and extra 40 miles for a quid and also using a higher quality fuel so for me it's wins all round... I was thinking I might get 1 or 2 MPG improvement but a 10% improvement was way above my expectations..


I know alot of people probably figured this out ages ago but for those doubters, like me, I thought you might like to see some facts and figures as you might think that 2 or 3 pence per litre more is too much but in the longer run you could be better off..

I'll be avoiding supermarket diesel from now on..


thanks for reading.

Martyn