corsa to the dealers?

thanks for input the car is fully serviced i have spent loads im getting on full tank 200 miles £45 petrol its bad 25 to gallon thanks i will take to dealers soon

ali
April 2011

A proper diagnostic check should involve much more than just reading fault codes.
They should also use live data readings to check real time outputs from other things such as coolant temp sensor, air flow meter, lambda sensor, fuel pressure etc., and test run any actuators such as EGR valve. They can fail in ways which will not set a fault code and it takes a trained, experienced operator to interpret the data.

For example a faulty coolant temp sensor will often fail and tell the engine management computer it is minus 40 degrees centigrade no matter how hot it really is. This makes the engine run rich, causing very bad MPG, but because the sensor is sending a signal the ECU thinks there is no fault, so no code is set.

Whether it is worth £93 is a matter for you to decide. Many independent workshops have diagnostic equipment and will be cheaper than the dealer, but make it clear to them you are NOT paying just for a code reading!!

dod
April 2011

If it passed the MOT test then the emissions must be quite good.
When you say it uses a lot of fuel how many miles per gallon?

Fill the tank reset that mileage trip and calculate the fuel used when you next fill up - 4.5ltrs to a gallon!

Depends upon age mileage and when car was last serviced plus type of journeys you do long or short. I would expect it will / should fall in the range of 36 to 42 MPG

Maurice
April 2011