What mpg does your car really do?

[AlexMumsnetCars]

What Car? has revealed that more than 95% of cars it tested failed to achieve their official fuel economy (click here for the full story in Mumsnet Cars). So what mpg figures do your cars manage in reality? Include your car's model, engine, trim and age if you can.

Jeep Compass 2.2 Diesel. Computer says about 37mpg (not sure if that's US gallons or UK) but on long journeys (without caravan!) can get just over 40.

Fiat 500C 1.2 petrol. Mostly short journeys and about 48mpg. Well short of the promised 63, but still really good.

My DN used to work in the motor trade and she claims every car does about 10mpg until the engine is properly warm, so if you want a real reading, reset the computer when it's warm.

Seat Leon 2.0 petrol. Latest reading was 24.4 mpg, 10 less than published figures, was mostly on motorway, not good but my driving style probably not help!

In a way that's reassuing to hear, Clara. We are right eco-freak drivers so I am extra surprised at the mileage. At least we still get benefit of £30 road tax and ability to park almost anywhere.

Mercedes A class 2l diesel auto, 47.8 overall, and I do tend to thrash it a bit. On long motorway journeys I get over 50

I have absolutely no idea... I'm amazed people know this fact about their cars.

That's what I was thinking MrsH - but I think some newer cars have this come up in a display on the dashboard.

I thought it was normal to keep track, lol.
How else can you start to figure out how much a journey costs?
I would keep track anyway (background in cost benefit analysis).

Yes mine tells me on my dashboard otherwise I wouldn't have a clue

i read this as what mpg does my CAT really do, a bit disappointed its cars tbh

Yes, my car's computer calculates it. I reset it every fuel refill so I can keep an eye on it :)

As I said already, my mpg is around the 45 mark most of the time and I've got it up to neatly 48 at the moment.

Here are the published figures:

Urban Fuel 45.6 mpg
Extra Urban 58.9 mpg
Combined 53.3 mpg

I don't get anywhere near the Extra Urban numbers even though I mainly drive rurally. The town numbers are not far off though.

Thing is lljkk - I don't want to know how much it costs. I have to do the journey(s) anyway, and am horrified by the cost of fuel, so I really don't want to keep being reminded of what it costs to do stuff I feel is usually essential, or at least important.

( plus i have NO idea re mpg - who cares?!)

Officially 34mpg, actual ...19mpg ... On motorway !!!

About 15-20mpg. Advertised at arnd 30. One of the reasons I'm trading it in....

Aaahhh right so some people have cars that actually show this information. I see. I really wouldn't even hazard a guess. I'm off to google!

Citroen C3 Picasso '59 plate 1.6 Diesel 48 mpg average in a rural-ish location. No idea what it's meant to be.

Google says urban 31, extra urban 51.4... I am none the wiser

Our 57 reg galaxy says 43.3mpg

Oh mine was vw golf BTW.

Mondeo ST220 V6 petrol estate. 23.9mpg day to day, including motorway trips. 'Officially' it should do 26mpg. OH did 6mpg in the city in it on Sat

Nothing anymore as the bugger had to be scrapped at the weekend after the engine went beyond repair

But it was an 05 Mazda 6 2l turbo diesel and 40 mpg max.

3 series bmw estate. I drive mainly on A road and get around 50mph. Is diesel car and think some turbo mumble.

Yaris Hybrid, less than a year old. 1.5l hybrid engine. 60mpg pretty consistently, though the website says anything up to 89mpg is possible. I don't make any particular effort to get more than 60!

Wow, this is really interesting! My deeply ancient (1999) Audi A4 estate 1.8 petrol does 38mpg around town, up to about 42 if it is on the motorway.

But she is getting to the end of her life :( I have owned her for 10 years and done 180 thousand miles) and I was looking at the Mazda 6... but I am now wondering if I should!

Somewhere around 27mpg is average I guess. When it's running properly anyway.

1968 Morris Traveller with a 1275 Marina engine. I think the manual for the original engine quotes mid-30s for mpg so she's not doing to badly considering she's 44!