Great MPG
CL Community Team
Joined: Sep 2009
Posts: 3,916
Likes: 227
From: Alabama
Wow - 29.3 - that's great MPG. My long term mileage on the 06 LS has averaged 21.8 mpg in a 50/50% mix of city highway driving. Not bad at all for a big rear wheel drive heavy sedan. On long highway runs I average 27.6 mpg running at 70-75mph. I drive the car smooth as possible, minimal brakes, no tail gating.
Lead Lap
Joined: Nov 2013
Posts: 651
Likes: 24
From: WI
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Brett Foote
Driver School Candidate
Joined: Oct 2013
Posts: 36
Likes: 1
From: CO
my computer is within 2% from calculated with gps and burping the tank to the absolute max fill. you wont believe it, but on monday i was over 31 mpg at the start of a tank for the first 50 miles lol. net it was about a 300ft in elevation drop, but it did have a steep climb, i was on cruise, i wasnt hypermiling, i usually keep the performance switch on, not sure if its true but i think the cams get some more advance at lower rpms for making more torque without have to downshift. if i just cruise to and from the airport its 72 miles round trip 95% highway, i can get over 27 mpg for a whole tank. if i dont leave the city it can dip as low as 16 for a tank, when i first picked up, i got over 580 miles on a tank driving it back then i ran into a 30mph headwind and my mpgs went down to 22mpg at 65mph, p.s. ive never put anything over regular unleaded in it. and in denver regular is only 85 oct.
Pole Position
Joined: Mar 2013
Posts: 302
Likes: 17
From: CA
My 05 that came with 18" chrome rims is calibrated for the stock 17" size for speed and mileage. I did the comparison using my GPS mileage "trip meter" and the car's trip meter. So the MPG would be slightly off.
Driver School Candidate
Joined: Oct 2013
Posts: 36
Likes: 1
From: CO
i got my correction factor from calculating my odometer error via gps, and i burp the tank to the top everytime i fill it, it will usually take almost 2-2.1 extra gallons from when it first stops the pump. using this method i was able to find my exact fuel mileage and fuel mileage error during an 1100 mile
Instructor
Joined: Mar 2009
Posts: 1,052
Likes: 128
From: GA
I use the alternate method mentioned here
Step 1. Filling the vehicle's gas tank completely and re-setting the trip odometer. Note: Sometimes it's easy to get the main odometer and trip odometer readings confused, especially if the vehicle is new.
Step 2.
When it's time to re-fuel
Filling the tank completely
Writing down the number of gallons it took to fill the tank
Writing down the mileage on the trip odometer
Re-setting the trip odometer
Example: It took 9.5 gallons to completely fill the tank, and the trip odometer reads 335 miles.
Step 3. Dividing the number of miles driven by the number of gallons it took to fill the tank. The result is the vehicle's MPG for that driving period. Example: 335 miles divided by 9.5 gallons equals 35.5 miles per gallon.
Step 1. Filling the vehicle's gas tank completely and re-setting the trip odometer. Note: Sometimes it's easy to get the main odometer and trip odometer readings confused, especially if the vehicle is new.
Step 2.
When it's time to re-fuel
Filling the tank completely
Writing down the number of gallons it took to fill the tank
Writing down the mileage on the trip odometer
Re-setting the trip odometer
Example: It took 9.5 gallons to completely fill the tank, and the trip odometer reads 335 miles.
Step 3. Dividing the number of miles driven by the number of gallons it took to fill the tank. The result is the vehicle's MPG for that driving period. Example: 335 miles divided by 9.5 gallons equals 35.5 miles per gallon.
Pole Position
Joined: Aug 2010
Posts: 354
Likes: 5
From: NV
I avg about 20-21mpg each fill up (Doing the trip meter method)...probably 80% highway, but doing 80-85mph most of it LOL.
I can't drive 60-65 around here...people drive nuts cutting off, following too close...sometimes it's safer driving a little faster honestly
I can't drive 60-65 around here...people drive nuts cutting off, following too close...sometimes it's safer driving a little faster honestly
