Intermittent engine management light, Bad MPG

[Emily.]

I got my 182 a few months ago. I've noticed that sometimes the engine management light will come on, it will stay on for a few days and then go off again. I've also noticed that my MPG is pretty crap compared to what it was when I first got the car. I did a 3 hour motorway drive and it was at about 35MPG and seems to be around 26MPG for normal driving around town.

I'm going to try and get the car plugged in at the weekend and see if anything comes up, but does anyone have any suggestions as to what the problem could be? I don't know if the engine management light and mpg could be linked? Thanks

 

[JamesBryan]

Lambda sensor on the cat I think it'll be.

 

[..Jack..]

Lambda sensor on the cat I think it'll be.

+1

 

[Diagro]

Your MPG is 35 ATM?
Thats not bad at all

 

[bozothenutter]

is it running crap when cold?

 

[JamesBryan]

Your MPG is 35 ATM?
Thats not bad at all

A 3 hour motorway journey should see 40+ at 60-70mph.

 

[Emily.]

It's at about 24 atm, and thats driving like an old person. It's doesn't run too bad when it's cold.

 

[JamesBryan]

On your next longish motorway drive, do a constant 60mph and reset the MPG, after you get off the motorway make a note of the MPG. It should be over 40.

I can get 49 on a good run.

 

[Diagro]

Yea 24 is bad.
I'm at 30mpg atm