Seanalf
Active Member
Afternoon all. So I've had the car for a month now and I'm looking for a little advice on MPG. I drove to see @Gazwould the other day and he commented that my MPG seemed a little low. I'd driven 68miles with a mix of good A road, motorway and a little driving through Bath. I arrived with the car showing about 46mpg. The car has only done 40k, so a lack of driving could be the answer, but I've done a chunk since so hoping it would have blown the cobwebs out a bit sooner lol.
Set up as follows:
A/C on auto at 20 degrees
Mostly in E mode (occasionally Manual mode)
Not a heavy right foot
Pressures all at 36psi (AMG 18" staggered), tyres with loads of life
Re-map to 200bhp, but no fault codes showing at the time of mapping and the economy is the same since
Without physically checking, a new air filter and oil change done 2k ago when I bought her
Stuck to speed limits
Did a long run to Bournemouth a few weeks ago (200 miles), put a bottle of redex in for the journey, got around 51mpg, I engage cruise pretty much as soon as I get on the M4, best I've had was 53mpg showing after a reset and getting on the M4 pretty much straight away (but in the 60mph limit for a good portion of the journey).
The car seems to be running fine, no lumpy idle, comes up to temp ok and doesn't drop when stationary. I'm not disappointed, I was getting about the same from my 75 manual, was just thinking I might get a few more, or this this about normal except for the motorway runs?
So the question is, where should I start looking? I was thinking maybe MAF (clean or replace), another bottle of Redex, thermostat (if it would make any difference), putting the car in for a service at an indie in Cardiff and see if anything comes up on a health check? Any other suggestions or confirmations I'm worrying over nothing?
Thanks all.
Set up as follows:
A/C on auto at 20 degrees
Mostly in E mode (occasionally Manual mode)
Not a heavy right foot
Pressures all at 36psi (AMG 18" staggered), tyres with loads of life
Re-map to 200bhp, but no fault codes showing at the time of mapping and the economy is the same since
Without physically checking, a new air filter and oil change done 2k ago when I bought her
Stuck to speed limits
Did a long run to Bournemouth a few weeks ago (200 miles), put a bottle of redex in for the journey, got around 51mpg, I engage cruise pretty much as soon as I get on the M4, best I've had was 53mpg showing after a reset and getting on the M4 pretty much straight away (but in the 60mph limit for a good portion of the journey).
The car seems to be running fine, no lumpy idle, comes up to temp ok and doesn't drop when stationary. I'm not disappointed, I was getting about the same from my 75 manual, was just thinking I might get a few more, or this this about normal except for the motorway runs?
So the question is, where should I start looking? I was thinking maybe MAF (clean or replace), another bottle of Redex, thermostat (if it would make any difference), putting the car in for a service at an indie in Cardiff and see if anything comes up on a health check? Any other suggestions or confirmations I'm worrying over nothing?
Thanks all.