imported_chughnyc

I need to know if this is just me...

I drive pretty normal (about 60-80 km/h street driving, 100-125 km/h highway). I've noticed that my fuel economy seems very poor considering I drive a 2000 Civic Sedan (auto). The car came to me in mint condition, with only 30,000km on it (bought it in November of 2002).

I get approximately 350km for a full tank. That's a mix of street and highway. In fact, for my most recent tank, I filled up on the way to Darknights and used almost half the tank on highway driving alone. At 1/2 tank of all highway driving, I got about 170km. This seems wrong.

I changed to 17" rims, and the profile on my rubber is 40. Could this be contributing to my poor fuel economy? What can I do?

SilverCRXSi

Have you done a tuneup? (although it may be a little early it sure wont hurt)
hows your air filter?
Have you tried running fuel injection cleaner?

I get almost 400km/tank and thats a combo of driviing hwy/city.

Do you have any heavy things you carry around?

I'm sure someone else can think of something elsE...

imported_chughnyc

Well...here's a summary....

I have the records from the previous owner for the car's service history. The previous owner followed Honda's recommended service plan (~every 6,000km servicing, and after a certain amount of type 1 basic servicing, you get the occasional type 2 servicing). I've followed the same pattern. At 36,000, I had a tune up (lube, oil, filter), from Honda. That was about 1,000 km ago.

In my trunk, there's an MDF box holding 2 12" Alpine type-r woofers. I think my 17" rims (Enkei RS-5s) are heavier than the factory rims. The reason I say this is b/c when I first got the car, even without putting my foot on the gas, I'd probably go about 10-12km/h on my street. But with the 17s, my car seems heavier, and will go about 5km/h on my street without pushing the gas pedal.

Is it possible that the bigger rims (weight and diameter), and the added weight of the subwoofers have affected my fuel economy by as much as 35-50km / tank?

MystixEL

I get the same milage,

but i suppose, carrying 4 loaded school bags and 3 extra passengers, will make a difference?

imported_JookSingKid

yeah... lol

bbarbulo

iTrader: (2)

On rims and other mods I still get 500-550 kms / tank 1998 Honda Civic LX baby boy!! My rims weigh less than stockers though.

bbarbulo

iTrader: (2)

Mods improve fuel economy in most cases, unless you screw up your tuning. Get an a/f gauge and learn to read what it's telling you. And yes, Enkei rims are heavy, and are prolly contributing to your lower mileage, as well as your auto tranny. What you get is prolly just about average.

carfan

I got the question last winter. I do a lot of things like replace spark plug, fuel filter, air filter. Use less a/c. I believe it eats a lot of gas if you turn a/c fan speed high. Use honda's oil or oil that is energy saving. Tire condition is also very important. Now I am quite satisfied with my car's mileage this summer(700-750 km per tank on highway). I don't know how it will perform on winter, though.

punkindrublic

i have a 93 d16z6 motor with 280 000 kms... mated to a 99 dx tranny (low revs)... and i can get 600 kms normally... if i shift low i can get closer to 700

Konig

This doesn't seem right. I was getting 490 - 550 outta my 97 Civic si with auto tranny.

I suggest you do a complete turn up Ie. Rotor, cap, plugs, wires and air filter. This should increase your gas milage.

My buddy has a 2002 sport 5 Speed and he is getting over 600k per tank.

imported_toyman29

yeah taht doesnt sound good..
i have a 94 corolla
and thats what im getting.. like 350kms a tank (approx 35-40L)
i have 16's intake exaust

2000 is still new should be more

-_*Lucifer*_-

Get Iridium spark plugs with some decent wires. Keep the stock intake thou.

My friend got a Acura EL and he went from 250 km on a tank to over 400 just with what I stated above.

You want stock airflow which will keep the fuel flow stock so that way you will be at stock milege. You do need to increase the efficiency of the engine by making the fuel burn better. That way every time you step on the gas you will generate more horsepower and you will need to spend less fuel because you now have higher efficiecy. And blah blah blah...you've got more milegage.