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Sudden decrease in fuel consumption
Back in March 2015 I asked you:
"I bought a 2012 Honda Civic 1.8 EX i-VTEC in February, swapping it for my 2006 2.2i-CTDi. The overwhelming 'feature' of the new car is its enormous thirst for petrol and I am wondering whether there could be a problem as the engine feels stifled below about 4000rpm."
Over the last month fuel consumption has shot DOWN. I'm now getting under 40mpg and don't know why. I had a few tanks of Shell V-Power as you recommended, when prices were 10p lower than today. Now I only use Shell ordinary petrol. I keep revs around 4000-6000 when accelerating and the car feels completely different from when I bought it about 10,000 miles ago.
What has happened? Have I run it in again or has the petrol cleaned out the engine gunk?
"I bought a 2012 Honda Civic 1.8 EX i-VTEC in February, swapping it for my 2006 2.2i-CTDi. The overwhelming 'feature' of the new car is its enormous thirst for petrol and I am wondering whether there could be a problem as the engine feels stifled below about 4000rpm."
Over the last month fuel consumption has shot DOWN. I'm now getting under 40mpg and don't know why. I had a few tanks of Shell V-Power as you recommended, when prices were 10p lower than today. Now I only use Shell ordinary petrol. I keep revs around 4000-6000 when accelerating and the car feels completely different from when I bought it about 10,000 miles ago.
What has happened? Have I run it in again or has the petrol cleaned out the engine gunk?
Asked on 9 July 2016 by Bigsphinx
Answered by
Honest John
Presumably you mean the current shape Civic 1.8iVTEC. Here's my test of one in which I averaged 48.1mpg brim to brim: www.honestjohn.co.uk/road-tests/honda/honda-civic-.../ The Real MPG average is 41.7mpg: www.honestjohn.co.uk/realmpg/honda/civic-2012/ So there must be something wrong. Back to the Honda dealer.
Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.
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Real MPG enables you to register the fuel economy you are actually getting against your make and model of car, its engine and type of transmission.
Every time you enter an average consumption figure against your car, the overall average automatically adjusts to reflect it.
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