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Hi,

Just want to point out that I'm in Hamilton, Ontario, Canada before I start writing this.

I bought a used 2004 Honda Civic SI (1.7L V-Tec), 5-speed with 60,000kms. I did a car check and everything, and the seller had all his receipts from the dealership following the schedule in the Honda manual for tune-ups, oil changes, etc.

The car runs AWESOME! I have no problems with any noises or anything. It's smooth and the tires have plenty of tread left. However, I had to go to Toronto yesterday and filled up the fuel to FULL. I decided to reset the Trip meter to 0 see how good of mileage I get out of it.

To my astonishment! when I got back from Toronto, my fuel indicator was AT HALF. I thought this was a bit odd so I pressed in the button to get to my Trip A and I've driven 267.9km!!!! ON HALF A TANK!!! APPROX. 25L!!! FOR 267.9KM!!???

I checked the manual and it says it is a 50L tank. WOW!

To do some calculations:
50L tank
Filled up to FULL
267.9KM (half highway driving, half city)
Fuel gauge is now exactly at half

267.9km/25L
= 10.17km/L
= 9.33L/100km (30 miles per gallon)

I always thought that 5-speed civic's in excellent condition would AT LEAST get around 7.9L/100km for city, 7.0L/100km on highway.

Can this really be?? Is around 9.33L for 100km right or is there something wrong with my Civic???

Help please!

Thanks

 
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First thing I would do is check your air filter. If its dirty, then obviously replace it. Make sure you have proper tire pressure. And then if those are fine you could try a fuel system cleaning, or just get some injector cleaners. But other than that I dont know what to tell you. Make sure all the fluid levels are where they should be.

 
Rep Power: 228

see if theres a hole in your gas tank. it could always be something simple like that. my dads sis had a 1970 charger and sold it for $100 because there was a hole in the tank that she didnt know of.

also could be injectors

 
Rep Power: 812

welcome back

 
Rep Power: 278

Well that gas gauge is not very accurate, the only way to really tell is go and gas up. Then recalculate your mileage.

 
Rep Power: 0

Hey,

Update: So I filled up the tank and drove it for a bit and then filled up again and read the litres off the pump.

Drove: 365.7km
Filled up: 24.227L which is a grand total of
= 6.625L/100km!
= 35.504 miles per gallon!

So the car is running great! I guess it's just a gague thing.

Thanks for the help.

 
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You'll never get consistent gas mileage readings. It all depends on your driving habits between gas pump visits.

 
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Drive it like a grandma, and you'll get great mileage