benjy23

Hi All,

i have a 2015 AMG GT S, bought it pre owned about six months ago and wanted to see if anyone has had a similar experience to me.

i seem to be finding that even if everything is left in comfort mode, i still only get 9 MPG. on a full tank of premium unleaded i get 140 miles. i do drive mostly in the city but even so the stated figures were around 18-20 MPG for city driving. was wondering if there could be a leak of some sort? i wasn't expecting it to be any good on fuel but i feel this may be a little too bad?

Also worth noting, in my spec sheet it says there is an 80 litre fuel tank in the car, however when i fill it up from empty it is only 65 litres when full.

Thank you in advance!

Regards

jrcart

It's not leaking, and you will never get 18-20mpg. Any mode beyond C mode tells the ECU to adds a ton of timing and fuel.

rsalco

Something wrong there. The car gets 14-15 mpg. city driving [14.7 in my case, in "M" trans mode, shifting @ 2000-2500 rpm]. Take it to a dealer.

CAracer

It doesn't sound right to me either. I know I'm doing well beyond 9 mpg

benjy23

may i ask how many miles it says you have left once you fill up with fuel? thanks!

rsalco

When I filled up last week and reset the trip odometer, it said 260 miles.

benjy23

by trip odometer do you mean where it says MPG from start? sorry for the silly questions!

CAracer

I rarely look. I just checked with 3/4 of a tank remaining: 260 miles.

Good luck

rsalco

It displays in the "trip" screen; miles to go. The tank BTW is a smidge over 17 gals.


Refer to owner's e-manual in the onboard computer for complete details of available data and settings.

benjy23

ah thank you! and how do i restart the miles to go?

rsalco

Reset the trip odometer; on start-up, press "OK" using left side steering wheel controls, press Down toggle to select reset, press "OK".


If all else fails, read the owners manual.....

MStach

7.5 mpg at WOT 😂😂😂

rsalco

Better than my track-only C6Z06....

emericr

If you are saying that the computer readout shows 9MPG since you have owned it, you have filled up a few times and you only get 140 miles on average, and you do not drive it like you stole it, then I think you have a problem.
I only had my car for less than a month and I am doing my best to follow the breaking period. I filled up 3 times and I am around 280 miles with no more bar on the read out. My computer shows 17 mpg and that's mostly semi urban driving.

JB C63S

27 mpg on the hwy 53 going into town. 129 mph in the quarter. Awesome.

JB C63S

But also 9mpg on fun days in S+

MStach

That mpg is on track only

eclapton24

I have averaged about 20.1 mpg over the past year with a stock Edition 1, driving daily over 18k miles, about 60% highway, 40% stop & go city. The highway driving is spirited in S mode for the most part around 80-85mph. City driving is conservative in Confort mode.