I have about 865 miles on my TSX...
Is it reasonable to be getting about 15 miles per gallon?
because that is what im getting and its a little annoying to stop and fill up gas every 4 days...

 

Dpak, there are several possible reason for your unusually low mileage:

1. Your TSX is still not broken in
2. Winter - my TSX mileage definitely is much worse during winter in this cold, snowy climate (but I don't know where you live!)
3. Your driving style?
4. Your calculation - is it by manual calculation or just what it shows on the computer? Don't trust that computer, do it yourself by dividing the number of miles by the number of gallons you just put in.

My TSX started off with about 17 miles per gallon, then it rapidly increased to 28mpg during summer and 24 during winter.

There have been many threads on this topic - do a search and you will see more answers.

Good luck!

 

I don't know how you're driving, but even with my leadfoot, I average 20 mpg regularly.

 

I'm getting about 19mpg in local driving around LA, which is pretty bad.

In strictly highway driving I'm getting about 30-32.

All the above took a while to get to after breakin, and have varied from time to time as the summer and winter gas formulations in California change.

 

21mpg here, 90% city and w/ a lead foot. My guess would be that your car just needs to be broken in.

 

The break-in oil could also be a factor.

 

Once the engine is broken in, if you drive your car like you stole it, you should get around 18 miles per gallon...

Trust me I have a lot of empirical data on the subject

Cheers and congrats

 

so you are the reason why gas prices are up!

 

Gas is not that bad... I paid $0.99 per litre this morning... Could be worse... Look at england...

 

damn, 15 mpg? i get about 31 with 90% freeway driving at 70mph. about 25mpg driving 75mph and with more city driving.

 

I was alarmed when I got my TSX a couple of weeks ago to discover that it was guzzling only 12 miles per gallon, but I listened to the advice on Acurazine posts that I should wait for my engine to be broken in. I am happy to report that my mileage on the second tank is up to 21 plus mpg. But that's still only a couple of hundred miles. Sounds as though you've done 4 times that. Well, maybe some engines take longer to break in...

 

15 MPG is very low. Even if you factor in the break-in period with the winter gas.

Remember to drive smoothely and brake smoothely. Avoid hard accelerations, idles, and needless revs.

 

i forget my nubmer. around 17-19 mpg tho. but i drive with a heavy foot.
just this last fill up i marked 469 km for 58 hm. work out to 12.36 L/100km (thats our milage value).
if anyone feels like converting for comparison, go ahead

 

15 seems REALLY low. But, considering the low mileage you have on it I'd give it a little more time. Do keep an eye on it every fill up. As everyone said, your driving style has a LOT to do with it. Take it really easy (I mean, baby it) on the next tank and then calculate your mileage again. It should go up.

 

If you have the Navi, the Advanced Trip Computer's History gives some helpful info on your driving for the previous tank's fill up. I got 16MPG once and noted from the Advanced trip my average speed was about 19 MPH and I can't remember how long the engine was running, I think it was somewhere around 9 or 10 hours.

So seeing you got 16MPG, I would say you drove your car about 95% city in stop and go traffic or having to stop at a lot of traffic lights. Or it could be due to parking the car with the engine running, I know when I was programming addresses in my Navi with the engine running, I went from something like an AVG of 23 or 21MPG to 18MPG (AVG MPG from Navi Trip computer).

 

Actually, I just realized...CHECK YOUR TIRE PRESSURE. If your tire pressure is significantly lower than recommended, you're going to experience significantly reduced gas mileage as a result.

 

I wouldn't recommend this. Then you can't separate the effects of how you're driving from what the car's doing. Drive like you normally do and see what happens. If it's still like this after 10-12 tanks of gas, then change your driving style.

 

I was getting really low gas mileage too when I first got my TSX last month. Due to the break-in, I was driving the car like a grandma and I was concerned when I noticed I was averaging 16 - 17mpg (via the navi trip computer). But this was like 95% city driving though. With a little over 1000 miles, my last tank info was 19.3mpg with an average speed of less than 20mph... again..mostly city driving.

 

My recommendation is for exactly that, to seperate his driving style from the performance of the car. If he babies it and the mileage goes up, then you know its the driving style. If it stays the same then you know its the car.

 

That's true. But break-in only happens once (and you can't turn it off). You can change your driving style anytime. I just think it makes sense to try and see if it's the break-in first.

Edit for clarity: If he changes his driving style now, the effects of coming out of break-in will be superimposed on top of the change in driving style.

 

Moot:
One of my best gas mileages was done at the second tank, precisely because I was breaking it in.

 

I think you're outside of all bad gas mileage consideration. Normal people get worse gas mileage during break-in. I got 17mpg on my first tank, and I was babying it to death (although I think the dealer put regular in it).

As a matter of fact, it doesn't even make sense that you'd get better mileage when things are wearing in. You must be some kinda mpg robot, sauceman...

 

Don't get me wrong! My hair nearly all turned white when I saw that a third of my gas tank was gone after only 100km!

But then things went to normal pretty quickly!

 

15mpg...wow then I'm thrilled with 28.6 (calculated) 32.2 (navi-avg.) on my new 6spd with 600+ miles on the odo. That would be from 60%/40% highway/city running 65-80mph commute.

 

My first tank of gas in the TSX i believe i got about 26-27mpg. Mostly highway driving, some city. The best mileage I've seen so far on it is about 31mpg, on a 95% highway trip. I've only filled up about 3-4 times since buying it 3 weeks ago. I've only used my secondary car like 4-5 times since then. I think the gas mileage is very comparable to what i get in my 98 Honda Civic.

Jennifer