Gas Mileage

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Gas Mileage - 6/22/2008 6:15:26 PM    07summitwhite   Posts: 342 Joined: 3/4/2007 Status: offline Once again the question is asked, sorry... I have a 2007 LTZ suburban and just broke 10,000 miles. when I first got her she was only getting 10 MPG. After about 5000 miles she jumped up to 11.7 MPG. Is this were she stops or could I expect to get a little more out of her? All my driving is city miles and maybe if I jump on a highway its only for a few exits. I only have maybe an extra 75 pounds in the cargo area and I''M running on 20''s if that helps at all... _____________________________ 2007 Suburban LTZ, Summit White, Light Cashmere Leather, Chrome Appearance Package, Assist Steps-Power Articulating, Entertainment Package, Power Moon Roof, Luggage Rack Rails, Rear Fascia Closeout, GM Hood protector, WeatherTech Floorliner Post #: 1

RE: Gas Mileage - 6/22/2008 7:38:57 PM    73shark Posts: 2210 Joined: 4/17/2006 Status: offline My ''07 Tahoe has 16K now and city mileage is in the 10-12 range driving it easy.  Have 20s also.  I wouldn''t expect much more but others seem to do a lot better. _____________________________ GM perf. exh, GM CAI, Superchips, Lund step tubes, billet grill, LED tails, Lloyd mats, rear console, GM flaps, silver calipers, black bow ties, tint (in reply to 07summitwhite) Post #: 2

RE: Gas Mileage - 6/22/2008 7:46:54 PM    07summitwhite   Posts: 342 Joined: 3/4/2007 Status: offline Thanks shark, I''M glad someone else besides me is up... _____________________________ 2007 Suburban LTZ, Summit White, Light Cashmere Leather, Chrome Appearance Package, Assist Steps-Power Articulating, Entertainment Package, Power Moon Roof, Luggage Rack Rails, Rear Fascia Closeout, GM Hood protector, WeatherTech Floorliner (in reply to 73shark) Post #: 3

RE: Gas Mileage - 6/22/2008 9:14:01 PM    haidangwa   Posts: 102 Joined: 1/6/2007 Status: offline I have an ''07 LT3 with over 33k miles.  I average 17.5 mpg with mostly highway driving.  City driving doesn''t go too far down at around 15.5 mpg (in reply to 07summitwhite) Post #: 4

RE: Gas Mileage - 6/23/2008 6:38:03 AM    oniscus   Posts: 41 Joined: 1/7/2008 Status: offline 07 LT3 burb and got 24"rims and flowmaster 50 series and i use to get 16.8 now it''s down to 16.0 and i have 12,000 miles on it.  I use it for work and i drive in philadelphia.  lots of traffic lights.  but i also drive some highway about 6 miles of it before i hit philly. (in reply to 07summitwhite) Post #: 5

RE: Gas Mileage - 6/23/2008 6:51:53 PM    Big D   Posts: 73 Joined: 4/3/2007 Status: offline i get about the same....when i pull an enclosed M/C trailer about 2,200 lbs the mileage drops to about 14.3 (in reply to haidangwa) Post #: 6

RE: Gas Mileage - 7/7/2008 3:05:22 PM    Golferal   Posts: 19 Joined: 11/13/2007 Status: offline I have 22s and average about 10.7 around town and about 14-16 on the highway. Does anyone know what the weight is of the stock GM 20''s versus an aftermarket 22" setup? I have noticed a difference in the ride; not so much because of the lower profile tires but more because I think the autoride suspension has a tough time with the extra weight. Anyone else notice this? (in reply to Big D) Post #: 7

RE: Gas Mileage - 7/11/2008 4:36:34 PM    bimmerborn   Posts: 94 Joined: 10/28/2007 Status: offline I have an 07 Hoe LS (4.8 liter) with original 17s. I get 17.0 mpg (according to DIC) and 16.7 mpg (according to me) 50 50 hwy city combo. I am easy on accelerator and glide to stop. I am planning to change to nitrogen in the next tire rotation (13K miles) I will post again if there is any imporvement in gas mileage. (in reply to Golferal) Post #: 8

RE: Gas Mileage - 7/12/2008 5:07:50 AM    mary900 Posts: 164 Joined: 12/4/2007 Status: offline 08 Tahoe LS with 20s and 5.7L mostly highway. Get 19.1 to 19.6 mpg. City driving goes down to around 17 mpg. No engine mods but I do run synthetic oil. I would expect the Burbs to drink a tad more gas, but I''m surprised at the low mpg that is being experienced. (in reply to bimmerborn) Post #: 9

RE: Gas Mileage - 7/12/2008 8:14:07 AM    in2pro Posts: 294 Joined: 4/20/2008 From: Austin, Texas Status: offline Mary you mean 5.3 liter right not 5.7 . The wife and I are about to head out on road trip and do some camping next week. We will be driving out to west Texas from Austin. It will my first offical long trip (empty a tank going one way) since I got my 07 in October. I am guessing at least 20 to 22mpg if we get no strong head winds, it should mostly be flat to moderate inclines. I have gotten 20mpg just going between Austin and San Antonio. (in reply to mary900) Post #: 10

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