Ford Focus (1998 - 2004) - 99 1.8 Causes of high fuel consumption

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Fri 5 Dec 2008 17:29
99 1.8 Causes of high fuel consumption - jp147
Can you please tell me what the causes of high fuel (petrol) consumption are and what other symptoms would my car have if it was suffering from this.

Thanks
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Fri 5 Dec 2008 18:13
99 1.8 Causes of high fuel consumption - TurboD
You first need to define 'high' relative to the 'standard' you were getting.
10%, 20%30%? more
But for a start, brakes binding, low tyre pressures, fuel leaks, low compression ( rings/valves), mixture all wrong, timing incorrect, poor driving, idling for hours in traffic, blocked air filter, worn spark plugs.
I would check those first
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Fri 5 Dec 2008 18:26
99 1.8 Causes of high fuel consumption - jp147
about 15-20% less.
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Fri 5 Dec 2008 20:14
99 1.8 Causes of high fuel consumption - shadyarea
Colder days takes longer to warm up,head lights in use,blower on, front and rear screen demisters working more.I bought a 04 1.6 petrol in june and week in week out always returned between 38 to 42 mpg depending how it was driven.In the last month to 6 weeks the best iv got is 39 mpg worst 34 and that is brim to brim every friday covering between 370 to 400 miles every week.I have always noticed a difference in the winter months

{reformatted to use the whole width of the text box, rather than just half of it}

Edited by Dynamic Dave on 05/12/2008 at 21:02

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