I've had my TL-S for about 3 weeks now, and I LOVE it. I've currently racked up about 1100 miles....and I babied it for the first 900 miles *for the break-in*

I just realized that there is an ave. mpg screen in the MID. I looked at it for the first time today, and it said my ave. mpg was 14?!?! I thought I was filling my gas up quite often, but this seems off....doesnt it?

 

14 mpg seems low. Try resetting your MID and take your car for a 50 mile drive on the hwy and see what you get.

I get 16/17 mpg for in city driving, but it goes up to 30 mpg on long hwy drives.

 

what's your avg mph for your 14mpg? I get 19 city driving but somewhere near 28 on highway as well.

It's all relative. the trip computer isn't the smartest thing in the world.

 

You're either doing almost all city driving or STEPPING on that gas pedal since the 'babying' period.

The Type-S with that RL engine uses slightly more gas than the regular TL. Something most of the TL-S owners here hardly took into consideration when they bought the car, but many are now with gas prices heading towards Mt. Everest.

One major fuckup on Acura's behalf is not providing an instantaneous MPG guage so people could adjust their driving habits for maximum mileage as they drive. The Nav Trip Computer in the Accord has one. We TL buyers pay $$$$ more, and therefore have every right to expect the same or better functionality, NOT LESS!

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Acura

 

Ever since I put on new 16.5# 18" Volks and RE050A 245/40/18" tires, which weight LESS then stock, and 1mm different offset from stock, my gas mileage has gone down quite a bit on the highway??????????????? AND the car feels slower????????????? I don't understand any of this, makes NO SENSE. WHY? Super light wheels, total weight of tire/wheel is lighter, and offset is the same. ??? WTF WTF WTF

 

Its because of your tires. 245s make the overall diameter larger than OEM. I have 245's on my 18's too and yes take off acceleration is slower. Plus ur speedometer will be slightly off too. You should of went with 235/40/18 if you wanted it close to the OEM diameter.

 

The diameter is exactly the same as stock. Same height, 1/2" wider, and weighs less then stock. Stock 17" tire and wheel is 51#. My new tire and wheel is 45#. Makes no sence. Unless the new tires are so sticky they make more resistance to the road??????

 

I just looked up the exact dimensions again. Stock 235/45/17 is 25.6" high, 9.6" wide, 814 turns per mile. The new 245/40/18 is 25.7" high, 9.8" wide, 811 turns per mile. Thats nothing. Considering the new package is 6# lighter at each corner.

 

the trip computer hack gets you instantaneous mpg readings if you wanna watch it, although its in 5mpg increments

 

Most likely, it's the increase in tire width. The more rubber on the road = more rolling resistance / friction. I experienced this same thing the 1st time I went up a tire size in width. I lost about 2 ~ 4 MPG depending on my driving habits.

 

I do mostly city driving. I live in the NYC area, and drive mostly in and out of the city...


However, I went up to the Catskill Mountains for the long weekend, and did a LOT of freeway driving.

The mpg went up to 16....

 

The one time the system mysteriously loaded the Accord Nav system on its own, I did have the Accord trip computer with the instantaneous MPG guage. The problem was the massive delay in response to gas pedal usage. Are you telling me its OK with the hack? Even though, 5 MPG increments is bullshit anyway.

The avg MPG indicator in the MID does not fully cut it nowadays. Acura has NO EXCUSE WHATSOEVER for not providing us with a true instantaneous MPG guage, especially considering what's been going on with gas prices. I'm shocked they didn't wake up and put it in the '07, and I'm yet to see any late model BMW that doesn't have one.

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Acura