I own a mitsubishi carisma. The MPG is showing 30.3. When I bought the car it was 36 MPG. Whats wrong Please??

I bought this car from a car centre. It has had a full service The gear box oil is ok. The Car is auto. When I start the car up it sometimes cuts out and I have to re-start it. The gear change is slow and the car starts dragging. Sometimes it feels and sounds like the car is going to cut out.I wonder if anyone has an Idea what may be wrong with it. Please.

Answers:
Your driving style is different to the last owner. I'm guessing you do a lot more town miles or are prone to putting your foot down a bit. Either one will MAJORLY affect the mileage.

As for the running of it - could be needing a new air filter, or air intake sensor. Get it in for a service.

If I'm careful I can get 28mpg out of my car - if not, just 17!!
The site on the Internet to find
Plugs, blocked air filter, rag sucked down the air intake,
30.3 sounds more reasonable than 36 so perhaps someone had driven downn the Motorway at 55 to get the mileage reading up to con you when yoy bought it.
It is a Mitsubishi so you cannot expect it to drive like a Honda can you.
Sounds like tthe jets are clogged up with carbon and maybe you need the tick over turned up.You could try a couple of shots of redex in the tank and give it a good blast down the motorway.
If you know where the fuel filter is empty it and put three good shots of good single whisky in and run the car .If this dont work drink the whisky and put the car in the auction.
proberbly whants a good service
stop booting it (putting the accelerator to the floor)
When did you buy the car? how many miles has it done since the service?
it probably wants a good seeing to ie service
You may need to burn premium fuel.

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