413 replies to this topic

[aph1101]

When I worked out the actual mpg on our 1.6tdci, it came out at 50/51 when the car is showing 51/52... I was quite surprised how close the computer was to the actual

[sussex]

I get 40mpg driving well and 36 driving with a heavy right foot on my 1.4 with 17" tyres

[InstructorPiggy]

I think you gyus are getting pretty good figures for the petrols...not bad at all to be honest, esp with 120bhp, me COlt Gti 1.6 was lucky to get 27/28 on a run!! that had 120bhp was frickin quick but useless on a run!!

[hammie]

i have a 1.6tdci zs with 17s and im only getn lyk 36mpg bout twn with a heavy right foot n bout 42 if im taken it easy

[amarokuk]

I get about 41-42MPG based on an average speed of 28-29MPH still car has done less than 6,000 miles so I don't expect to see the best figures until the car gets between 8,000 and 12,000 miles like every other car I have ever owned with less than 10,000 miles on it.

[squeegy]

My wife's 1.6 tdci is showing about 41 mpg on the computer. Which i think is a bit low. I would of expected closer to 50mpg

[Hook]

Over the last 1000 miles (car has done 3200 in 2 months) I've averaged 56mpg on my 1.4 tdci. Driving into Sheffield city centre always kills it

[sammy o]

1.6 petrol with dress up kit geting 29mpg ! went 100 miles (motorway driving) in 5 gear at about 50 mph and still only changed 0.3 !!!!! whats going on ?

[Stude41]

Driving around the North circular in the rush hour my 1.4 diesel is giving me about 48 /50. On a run at 70mph I'm getting about 55.

I had a Renault Megane cc 1.6 Petrol and that did 34mpg in town and 42 on a run, so I'm saving a bit, but of course the megane was a much higher spec. Even had nice speakers IN THE BACK !!!

[cyb]

info read out is currently 52mpg – my fiesta 1.4tcdi is used as a driving school car so there is lots of short low gear work, plus my wife likes to ‘borrow’ it to nip down the shops in if she gets half a chance

[RickyBobby]

Just filled tank up at the weekend (trip computer said 2 miles left) computer read 39.9mpg and actual calculations show 39.76 so i'd say the trip computer is pretty damn accurate. Was combined driving 3.5 hours on motorway coming back from cardiff and the rest on country lanes. Was averaging 42mpg for the motorway only which i thought would have been much more. I have the 1.25 petrol engine

[KeithC]

1.6 petrol with dress up kit geting 29mpg ! went 100 miles (motorway driving) in 5 gear at about 50 mph and still only changed 0.3 !!!!! whats going on ?

To answer your question, nothing.

Because that is average mpg you are seeing. Your 100 miles is only a percentage of your total miles since the computer was last reset, so your mpg will only alter by a percentage too and a very small percentage at that.

Say your car has done 3000 miles since you last reset, your 100 miles only relates to 3.3% of your total mileage.

So,

30 mpg average for 2900 miles equates to 96.6 gallons of fuel used.
45 mpg average for 100 miles equates to 2.2 gallons used.

So, for 3000 miles you have used 98.8 gallons which works out at 30.36 mpg.

So, that gives you a grand total of 0.36 mpg increase.

[JonMad]

How many times did you change your numbers until you got a '0.3' out?

Similarly I picked up my car with 6miles on the clock at 15mpg average. Probably lots of shuffling round a yard and a few stop/start trips. I didn't reset it. After some commuting and a 100 mile motorway trip it now says 45mpg average. Hopefully it will stabilise the right side of 50.

[KeithC]

How many times did you change your numbers until you got a '0.3' out?

Similarly I picked up my car with 6miles on the clock at 15mpg average. Probably lots of shuffling round a yard and a few stop/start trips. I didn't reset it. After some commuting and a 100 mile motorway trip it now says 45mpg average. Hopefully it will stabilise the right side of 50.

I didn't, I just used a lucky guess of 3000 as it wouldn't be mega mileage due to the newness of the car.

[dannymk7]

im gettin 33 mpg out of my 1.6 petrol with chip air filter and exaust im happy with that with the way i drive!