1st good run after re-map - good mpg ! - Alfa Romeo Forum
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How often should it regen ?

How often should a car do a regen and what sort of mpg should I expect ?

My car did a regen on the way down to Cornwall - suddenly noticed the car was running a bit rougher, the current fuel consumption dropped to around 28-32 mpg at 75 mpg and the turbo gauge dropped like a stone when I took my foot off the accelerater...

How ofter should the car regen ? Thats the second time since I have owned the car...


Last edited by Alfajunkie; 01-07-11 at 12:18. Reason: Incorrect
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I bet your not far off with the 50mpg. I also went to cornwall a few weeks back and averaged 48mpg in my 2.4 doing about 70mph. I normally average about 43mpg and have had the MOD3 fitted about 12 months ago. Mine regens about once every tank full, so about every 600 miles.
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To be honest I have never actually noticed my car doing regens, but have noticed mpg struggle to get above 33mpg doing 70mph on a m'way on some occassions. Maybe it was regen'ing at these times.

From what I gather the more driving in town and traffic the car does the more regens it needs to do, so it would all depend on what you driving routes are like.
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yep you're right. if you're doing all town driving then i reckon it'll regen every 300 miles or so

and i could never tell mine was doign a regen either apart from the mpg dropping like a stone for 10 mins now and again. gone now though, so no more wasting diesel for me
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