whats wrong with my hatch?

robo22sri

i put a post up asking people how many miles they get out of a tank of fuel and getting replys that average about 300 per tank :crazy: , my 2.2 hatch only gets 250 if i'm lucky :wtf: , i do mixed driving and when on motorway i dont go over 80 mph very often but use cruise control on motor way, could my car be running rich or need new spark plugs? it had a service little while back! any ideas why my car drinks so much fuel? cheers..

thanks guys

Daniel

i think my drinks loads 2 but its new to me and i just keep getting told i too heavy footed lol nice pic 2 m8

robo22sri

cheers mate picture is little different ha ha, my brother says i drive it hard but i dont cane it all the time!

JohnnyN

If I get on the motorway and keep below boost and just tinkle along at 60mph it shows 38mpg. Town driving shows 24mpg. Thing is though, now that I have seperate managment for the boost, its difficult to get a true reading of fuel consumption.

furn

try driving a bit steadier for a week or so, gentle acceleration maybe try some fuel system cleaner (redex) etc.
and i bet you will get your mpg up .

i also think that cruise control pulls my mpg down a bit , try driving without it see if it makes a difference.

i average about 25-27mpg by the way , my pedal is either on or off.

robo22sri

do you get into 5th gear when doing 30mph furn?

furn

yes sometimes when i have the wifey and breadsnappers in the car, but you have to make sure the engine isnt labouring or you will use more petrol again.

robo22sri

3rd is good gear in astra hatch best of both, what rpm do you change up a gear?

dodger

I travel to and from work which is approx 15 mile round trip, plus a few local trips at weekends and i'm averaging 32mpg. This is based on a steady drive 40/50mph roads then the ocassional hard acceration joining the A127 :-)

robo22sri

what gear do you drve in the most dodger?

dodger

mostly 5th

JohnnyN

5th gear at 30mph is not a good idea for fuel consumption. And as mentioned above, cruise control doesn't help either. You have far more control over the fuel when manually adjusting the throttle pedal than the cruise. Crusie constantly aims for the mph set by you so it will be fuelling then backing off all the time to achieve the speed that you set it at.

robo22sri

for doing 30mph 3rd gear is best then johnny?

JohnnyN

No way! 4th is perfect.

robo22sri

will try and change driving style been lazy driving ha ha, any body know good set of spark plugs to get?

JohnnyN

NGK Platinum plugs. Go onto ebay and type in z22se and they'll come up in the list. Failing that, genuine GM plugs are good too.

Daniel

looks like a have to change the way i drive myn too then lol how u guys no ya mpg tho myn dont have no computer 🙁 lol

JohnnyN

Old skool for you then my good man! Fill up, go for a drive over a period of 100 miles, go back to the pump and fill up again. Note how many litres that you have put back in, then convert to gallons if your old like me. 100 miles divided by number of gallons = mpg!

Daniel

right i give that ago then cheers lol

robo22sri

i have no comupter in mine either! i want to fit one! i drive mine from full to empty every week and get 46 litres in my tank and get 250 if drive hard or like an old fart, i still get 250 out of it