: how many miles/kms are you hwy guys getting per tank? (V6 and V8's)



sdmfer
10-02-10, 08:00 PM
Just wondering. Trying to calculate how much more a month this car will cost in fuel if I get rid of my jetta TDI.

Thanks guys

Loren
10-03-10, 11:42 AM
Difficult question to properly answer since driving habits and terrain affect the mileage. I have an 08 V6DI and I just got back from a 5,124 mile cross country trip. Across the eastern portion of Colorado and Kansas, Oklahoma, Texas and NM where it was flat I got about 31 MPG using M6 and cruise control. In the hills of WV and VA it dropped to about 28 MPG. Can't give it to you in miles per tank since I haven't run it dry to find out, I would guess more than 450 based upon the computers message for the 17 gal tank.

EChas3
10-03-10, 12:45 PM
Yesterday, my 2006 AWD V8 registered 19.8 average MPG on the DIC cruising at 75 MPH. There were headwinds up to 30 MPH and I was using Adaptive Cruise. I've seen better but the AWD is geared lower and is thirsty for other reasons, too.

My wife's 2007 RWD V8 reported over 25 average MPG at 80 MPH on the orginal Michelin Energy tires (hard as they were, they did get good mileage). I feel the DIC calculations are about 5% optimistic. Choice of tires and tire pressures make a big difference.

sdmfer
10-03-10, 03:11 PM
thanks for the responses so far guys. I totally understand everything has an impact on fuel economy (size of tires, air pressure, foot heaviness, outside temp, types of fuel, wind, etc.) I'm just looking for ball park. I know on my TDI i can get 1000kms when the light comes on. Obviously the caddy is gonna be much less. If i can get away with spending 100-150 per month more in fuel I'll be happy. Much more than that I dont know if its worth it since I drive approx 800+ kms a week.

Just really looking forward to having an automatic and being comfortable again. Both of those right there is work 100-150 a month for me.

Anyone out there regularly fill up then drive until the light comes on? (i know some people are going to start saying its hard on the fuel pump, dirt in the gas etc)...lol.

thanks again folks.

Dietgrape
10-03-10, 03:44 PM
I get about 18 on my 2005 v8..city and hiway..not the greatest but the thing is a rocketship and i have fun driving it..

jedhead
10-03-10, 05:48 PM
The best distance from a tank I got has been 360 miles when the low fuel came on. All hwy miles at 80mph cruise control set on level ground. I usually average 20 - 21 mpg on the hwy and 16 - 17 mpg around town. If I get into the boost the gas mileage drops significantly.

Bob

Giddy
10-03-10, 07:04 PM
Just wondering. Trying to calculate how much more a month this car will cost in fuel if I get rid of my jetta TDI.

Thanks guys

I have a 2008 N*4 and just filled up. Somewhere around 50/50 local and highway.

Averaged 17.3 MPG with an average of 32.3 MPH and used 15.9 US gallons. (all numbers converted from metric)

Number of STSs seen using that tank - 0
Number of Jettas seen using that tank - several

I used to own a 2002 Jetta 1.8T with the sports package. Replaced the Jetta with a 2002 Seville STS and still missed some things about the Jetta. I am not missing either one with the 2008 STS4, but have only had it 3 months so far.

GG

EChas3
10-03-10, 07:26 PM
If you're one of those people that hate stopping for gas, you will be annoyed by the STS. The 17 usable gallons in the tank may not even last a V8 AWD 300 miles. Some forum members report problems with getting all the fuel because of the saddle-shaped tank that only uses 1 pump.

The low fuel warning is not to be ignored. You may have only one gallon left.

Giddy
10-03-10, 07:54 PM
If you're one of those people that hate stopping for gas, you will be annoyed by the STS. The 17 usable gallons in the tank may not even last a V8 AWD 300 miles. Some forum members report problems with getting all the fuel because of the saddle-shaped tank that only uses 1 pump.

The low fuel warning is not to be ignored. You may have only one gallon left.


I definitely noticed the lower distant per tank from the Seville. Oh well. :yup:

MacMuse
10-04-10, 11:19 AM
'06, V8 (all data in U.S. miles/gallons/dollars):

My habit for the last 1.5 years is to drive until the 'miles remaining' screen gets below 80miles. The light comes on around 40 miles remaining, and I don't mess around if I get that low - I give her a big drink soon.

Over that time my average MPG is 18.1 (I track religiously with an iPhone app). Best single tank is 26.5 (rural highway with a tail wind, 45-75mph), worst was 14.2 (all city, jack-rabbit driver ;) ). My drive is about 70/30 city/highway.

With premium 'Top Tier' fuel I get about 6.1 miles for every dollar spent on fuel based on about $3/gallon pricing.

Gas Cubby on the iPhone - cooool app...
http://i20.photobucket.com/albums/b215/MacMuse/CAR/a52db5ab.jpg

Midnight
10-04-10, 11:25 AM
I get usually around 18, mixed city/highway, V8 1SG. Any time you mash it, have to stop for whatever reason, it really kills your mileage, more than any other car I've driven. I think mine must be geared low or something because even on highway when trying I never approach the advertised 26. After about 22 I hit a ceiling.

Granted, I didn't buy the car for the mileage but geez, if it's 22 mpg tops, call it that plz. Is that how they do it, they take the highest geared, least equipped with the skinniest tires pumped up to 60 psi, run it downhill drafting behind an ice cream truck at 40 mph and get the "highway" figure from that?

So @ 18 mpg I refill at around 300 miles usually. I think the engineers who designed the tank were also fooled by the mileage claims.

I love the car but this part.. not so much.

sdmfer
10-04-10, 11:43 AM
Hmm thanks guys. Im starting to get a "little" scared. I dont mind stopping for fuel, but I would mind if I cant afford to hit the beerstore (in ontario canada) after the gas station...lol.

Luckily although I have a pretty far commute to work, its 99% HWY and 1% city if that. Perhaps I should just make sure to look for a 3.6 DI. On saturday i went out and test drove an 08 CTS. beautiful car, has everything that I would want/need, BUT the damn interior in that thing is not really that much roomier than my jetta. Thats a little frustrating....its so close to being the perfect car for me. This is why Im leaning towards the sts.

Midnight
10-04-10, 01:24 PM
Yeah I felt a little cramped in the CTS too. At least considering having passengers, kids, etc.

bbshriver
10-04-10, 02:27 PM
I'm probably an odd one out here... I have 05 V8 RWD with the 2.73 rear end.
My DIC is over 22mpg average. I take frequent highway trips and my range on the highway is greater than 450 miles. When it's just around town driving it's more like 300 miles. I don't think I've ever had to get gas before 300 miles though.

To me this is exceptional as my previous daily driver is a Jeep Cherokee, with a 21 gal tank where I got gas at 250miles on the highway. Around town driving my fuel light would come on just over 200 miles. I calculated about 12 mpg city, and 15-17 highway in that. In the STS I get 19ish city, and 26-28 highway. Probably one of the few people that partially justified buying a Cadillac because of the good gas mileage!

Another note, I use premium gas.. I did notice a mpg or 2 difference.