My 2018 new tahoe low mpgs please post your mpgs to compare

[Jorge1313]

I bought 2018 Tahoe rst with 6.2 and 10 speed transmission need feed back on mpg please suggest . My mpg in city driving are at 9 mpg is it because it new . And it city driving with flow of traffic not stopping for ever.

 

[Tony Berry]

I average about 17.3 with moderate city traffic in an '18 RST. Is it extreme stop and go traffic? That seems very low. The MPG goes up significantly if you can be partial throttle and have it kick to 4-cylinder mode. I got up to 28.2 on the freeway for a recent road trip.

 

[zrlee]

I avg around 20-21 in my 18’ RST and I drive 75-80% highway. No way you should only be getting 9 or so. I can avg 12-14 pulling a 6000lb boat.


Sent from my iPhone using Tapatalk

 

[Jorge1313]

That what I thought I should get higher mpgs I’m not towing anything and driving normal not fast and stop and go traffic is light. The dealer told me it new hardly been driven needs to break in . Thought it sound like bolony to me but gm suggest that a motor broken in take over 3000 miles what take on the rst

 

[zbad55]

Just a thought, can you change the DIC display to view when your in 4 cylinder mode and when your in V8 mode? Something does not sound right, and you should not have to break in the engine to get the MPG the sticker states. The MPG on the stickers are what you should average in normal driving conditions.

 

[Jorge1313]

Just a thought, can you change the DIC display to view when your in 4 cylinder mode and when your in V8 mode? Something does not sound right, and you should not have to break in the engine to get the MPG the sticker states. The MPG on the stickers are what you should average in normal driving conditions.

No I can’t change dic to view in 4 cylinder mode that what I thougt mpgs should be right off the bat when you buy a car not after break in but there been a lot back and fourth in articles I read on the internet hears one artivcle say the computer is meant to waste more fuel during break in
https://www.theglobeandmail.com/glo...anys-fuel-consumption-ratings/article8798854/

 

[Its_Shaun12]

I have to agree that 9 sounds awfully low regardless of any potential break in period you are going through. Regardless of what the dic shows I would calculate your mpgs manually next time to fill up at least to eliminate one more factor.

 

[bobsyouruncle]

I've got a new 2018 Denali with 5000 miles on it and I'm also getting around 18 mpg on average.

 

[ChrisYukon]

What kind of driving are you doing? If it's just short trips of 2-3 miles per time, then I see really low milage, too.

 

[Jorge1313]

What kind of driving are you doing? If it's just short trips of 2-3 miles per time, then I see really low milage, too.

Yes I am doing low mileage driving not much a week I’ll say most more on weekends mostly city driving but not heavy traffic

 

[ChrisYukon]

I can drive to the gas station down the street, and drive home, and it'll tell me I got 6 mpg. If I'm just driving it back and forth between the kids' school 1 1/2 miles away, it'll be pretty low too. Point is - you need to do "normal" driving to make any kind of an mpg judgement.

The bright side is - by driving 2 miles a day, you're using much less gas than the guy who gets 19 mpg on his 40 mile round trip highway commute.

 

[CMoore711]

No I can’t change dic to view in 4 cylinder mode...

You can’t...? The next time you’re at the dealership have them show you how to do this. It’s in real time and is easily visible in the DIC settings.

 

[Amanda4461]

Drive it for 30 miles at 70mph on cruise control. It should get 20+mpg. Mine gets 25 easily. Once you get up to speed, reset the dic to zero on Trip A of the trip meter. If this doesn't get you numbers above 20mpg, something is wrong.

 

[Mac 2018 Tahoe]

I'm not a good sample as i only have 375 miles on 18 Tahoe 5.3

 

[Mad Maxx]

Just did my first fill up yesterday and doing 100% small town / short trips, I'm getting 12.1mpg.

 

[olyelr]

We used to average 8-9 mpg towing an 8000 pound travel trailer with my wife's ‘15 yukon. Not sure how you could possibly get that low without a huge trailer in tow.

 

[wa3cuj]

I bought 2018 Tahoe rst with 6.2 and 10 speed transmission need feed back on mpg please suggest . My mpg in city driving are at 9 mpg is it because it new . And it city driving with flow of traffic not stopping for ever.

I have a 2018 Yukon Denali with the 6,2 and 10 speed. I have tracked my mileage since the day I got it. I saw a slight improvement around 5000 miles. You cannot go by the MPG display on your instrument panel. I started tracking the calculated MPG against the displayed MPG and found that it is rarely even close!!! My spreadsheet is pasted below:

 

[wa3cuj]

Sorry, all formatting went away when I hit POST.

 

[fozzi58]

in the DIC there is an options setting that allows you to turn on more features. Check to see what is turned off. I love the steering angle and the pitch of the vehicle on hills. But I am mostly on the instand MPG which, as stated by Wa3 is not accurate.

 

[skeee1]

I have a 2018 Tahoe RST with the 6.2 I get about 21mpg on the highway and I get 13mpg in the city. I do have a Pedal Commander though. www.pedalcommander.com