Over-fueling

[SkodiRS]

Anyone know how to tell whether your car is over-fuelling?

I know about looking at the soot on the exhaust (but how do you know what's normal?) and I suppose fuel consumption.

Any other tests/indicators?

Cheers.

Adrian.

[DGW]

Soot deposits on spark plugs.

[SilveRS]

Adrian, Myself and my mate Dave have noticed this, but given I am getting on average 33mpg on a work journey and 38mpg on an 85mph run I am not worried.

[DGW]

Soot is normal if you do shortish journeys and a grey exhaust if you do mainly longer ones where the engine is at operating temperature for most of the journey.

[SkodiRS]

I was just wondering as my fuel consumption seems to be really bad of late.

Usually I can get 40mpg on the motorway and am struggling to get even 35mpg. My route to work I could get 35mpg and can get 32-33mpg now.

Maybe I'm just enjoying the remap etc too much.

Car is booked in for it's first service in a couple of weeks, got 20.5k now and still no indicator, so hopefully that will make a difference. That or I have to take off the lead boots.

[DGW]

If you've got 20.5K, Adrian, you have overshot your first service. Get the dealer to check why there was no warning of the need for a service.

[SkodiRS]

I booked the car in at 19.5k a couple of weeks ago but couldn't get a booking until 16/10.

I don't think the indicator will come on unless the car thinks it needs servicing but as you have mentioned previously the owner should book in if 20k miles or 2 years has been reached regardless of the indicator.

Previously had service manager check the indicator at 10k as I was told that mine was on fixed servicing but no indicator came on. Will ask them to check it again anyway.