reset your tripmeter, and do 100kms whilst driving in D and try not to exceed 4000rpm, when accelerating let it climb to about 2000rpm. and cruising should be abt 1500ish at 70lm/h your end figure should be about 6l/100, if not then something is off.
There's definately an issue if you're really using 8.8 l/100km. Even 7.8 l/100km is excessive, unless you drive like you're on a race track or in heavily congested traffic for nearly all of your driving.
How many km's do you get out of a tank? You should be getting 600 but you would be getting <450 if you're using 8.8 l/100km.
First thing to do before you atempt to troubleshoot is to check the accuracy of your trip computer. They can be inaccurate depending on the type of fuel you're using. After filling the tank to the top, reset your trip computer. After travelling a few hundred kms refill the tank again to the top and record the number of litres used (on the bowser), the trip distance travelled and the trip computer l/100km. Real L/100km is then worked out by the following calculation:
LITRES divided by KILOMETRES multiplied by 100 = l/100km
Compare this to what your trip computer says to determine if your trip computer is accurate. If you get roughly the same answer as your trip computer you should then start troubleshooting your high fuel consumption issue.
yeah, my friend's VTI-S manual gets around 6.6 and he drives like he is on a racetrack. I initally blamed my high consumption to Auto and lots of city traffic driving, but still 8.8 is very high. I will reset the computer, follow the driving technique as suggested by GU357, then refill the tank and check to to see if my computer is accurate. Will report back...
also i run on 98 always (debatable whether or not its any good), and when u reset the trip meter dont be scared by the initial figures the computer gives out, mine will say things like 20l/100 until i actually get some distance into the trip comp the thing is useless, and will give back poor averages.
Ok, I have filled up the tank twice now and did the manual calculation. Both times I got 7.8l/100km, whereas the computer read 8.8l/100km (i reset it after the first refill). Is there a way to adjust the computer?