Falling MPG any ideas?

Slowly_does_it..

If Redex is too pricey, a tank of BP Ultimate might help. For £8 extra a tank worth a shot?

Also Limey has a good point -

Limey wrote: »

OP mentioned an ECU reprogram and subsequent change, were you told why they did this?

Also is the car an auto?

Mr_Mink

Slowly_does_it.. wrote: »

If Redex is too pricey, a tank of BP Ultimate might help. For £8 extra a tank worth a shot?

Also Limey has a good point -

I've got a friend who is friends with someone at Fortron looking to get me some of their stuff on mates rates so I'll give that a pop first.

The ECU, they didn't tell me the purpose of the change but since it was only recent and this drop has been consistent for well over a year, I don't think it's the likely culprit.

And, it's a manual gearbox.

mcpitman

Norman_Castle wrote: »

It doesn't exist!. It was a throwaway comment at the start which someone picked up on. I'm tired of waiting for someone to shout !!!!!!!!.

<<< Here's a clue.

I doubt it would be accurate. A small drop in tyre pressure would be more noticeable than tyre wear. Loosing 5mm of tread over 10,000 miles is 0.5mm per 1000 miles reducing the circumference of the average tyre by ?.. Only NASA needs to calculate fuel use this accurately.

Recognising regular journeys would be simple. They are just time, speed and distance patterns which can be matched.

Odd, very odd.