I have had my new 2005 GXP for less than 2 weeks now - but I had a 1,600 mile drive home with it - Ha! I live just southwest of Houston, TX and bought my car in northern Virginia and drove down through Charlotte, NC. I reset the fuel avg every time I filled up and had a high of 21.4 mpg and a low of 19.4 mpg. Not too bad as I was usually around 75mph and in some hilly conditions at times. Here at home I have seen a much lower avg - but I am sure it is due to mostly in-town driving, spirited driving, and a short warmup period each time I take it out.

I plan on adding a K&N Filter and some Bosch Platinum +4 Plugs (have them in our other 3 vehicles and have been very pleased with them despite negative comments about them on some other boards) to boost HP a bit and maybe pick up a slight amount in fuel economy as well.

Looking for more mods - but they sure seem to be few and far between. Very happy to find this forum though. Thanks!

We have a 2005 Bonne GXP. Took it to Indy last weekend for the All State 400 and we got 21.5 to 22.5 on the Interstate traveling anywhere from 70-75 mph. Had some two lane 60 mph driving on the way home and we were getting 24 at 60 mph. Car has 13,000 miles, 87 octane with normal driving.

Please start a new topic. Do not bring up old ones.

Bonneville94V688


Do you have a problem with people posting a reply to a thread? You can start your own new topic, I am posting on this topic.

Make that 130 mph in third.
And getting 22 mpg now.


Posted purely to irritate the self-appointed topic police.

My computer is pretty accurate as far as the MPG and Gallons used. I live in So. Cal and get really crappy MPG also, I get about 14.5 to 15 and I have an 01 SSEi. Have really never gotten any better than 19 on the Hiway and that was a while ago. I really believe it is the California Gas as well as our terrain here. I have only 59k on mine and have made some minor mod'* as well as replacing the o2 sensor and given it 3k oil changes like clockwork. Tires are always inflated properly. I really love my 01 and would not trade it for the world, I'll keep it until the day I die. It'* just one of those types of vehicles. The MPG I really can care less about, I'd like better but I really don't Give A D**n! I think the GXP'* are bitchen car'* and turns alot of heads.

My 05 GXP didnt get more than 17mpg most of the time. I think the N* has to work harder since theres not much power down low and thats what hurt peoples gas miles.

Torker--Bonneville94V688 was trying to be helpful. We do not like threads that are more than 30 days old to be "dug up"...meaning, a new post added to the thread.