What's your mpg...

[evilunclegrimace]

1998 K 1500 Suburban 5.7, 4L60E, 3.73 gears 16.8 MPG on the Highway, about 14MPG around town.

 

[spf1268]

For last months drive SoCal to Phoenix AZ + return, my 1996 RCLB 5.0 Vortec + 4l60E with 3.42 gears and 235/75/15's got 20.5 MPG doing 75-80 MPH. Around town it gets 18 or so..

 

[Supercharged111]

This applies to a number of you in here

You must be registered for see images attach

 

[sntrym]

1995 4dr Yukon 350 Vortec motor TBI injection. 4l60E 2wd, 3.42 rear. 255/70/15 tires. Custom tune and shift points. Electric fan
75mph - 16.5mpg
60mph - 18 mpg
towing 6000lb boat @55mph - 12.5mpg

 

[L31MaxExpress]

1997 Express conversion van, 383/4L85E and 4.10 geared 10.5" on LT275/70R16s gets 18 highway and 12-13 city.

99 Tahoe LT 4 door 8.1 with 425hp mercruiser cam and headers/4L85E with 3.42s and 33" tall P305/50R20s was getting 17 mpg highway and 11 city before I yanked the engine to freshen it up. Had a burned exhaust valve and low compression in #6. Doing rings/bearings/gaskets and the heads. Same Tahoe with a cammed L30 305 and a 4L60E was getting 16 mpg city and 22-23 mpg highway.

 

[98chevy2500SS]

My 96 - 350, 3.42s, 32x11.5r15s, 4WD, I get around 13-14mpg most days, 15-16mpg on a long trip.

My 98 - 350, 4.10s, 285/75r16s, 4WD, I get around 11-12mpg.

Both have 4L60E trans.

 

[packer0440]

1992 C3500
Stock 454 ECLB dually 4L80E stock tires 4.10 gears
10 mpg city 13 highway empty
Not much decrease loaded

 

[F4U-1A]

25 years in, if there is no headwind, unt there is no Zero on my tail. Will consume 11.7 liters per 52.08 nautical miles, assuming my math is correct.

 

[RedBurb]

'97 454/4L80/3.73 with 265/75/16 BF Goodrich T/A KO2s (55psi front/75 psi rear)----

Four data points:

13.3 MPG ---Best 40 gallon tank ever (99% driving Highway @60-65 mph)
11.4 MPG, 95% HWY@ 65-70 mph (data gathered over a total range of approx 1800 miles)
9.3 MPG, 60% City, 40% HWY, (data gathered over approx 500 miles)
8.8 MPG, Towing approx 9K lbs, 95% HWY @60-65mph (data over range of approx. 700 miles)

I have access to a truck scale and weighed the truck twice ---I recall approximately 6,850 lbs with me in it. Almost of all of the miles above have been @ this vehicle weight (always carry tow chains, straps, a toolbox, two spares, etc.)

 

[HotWheelsBurban]

'99 Chevy Suburban, C1500, 5.7 Vortec, stock, usually goes around partially loaded ( because large spaces tend to acquire things needing to be stored).... in Houston, Texas area city driving, usually gets 11-12 mpg. Not super consistent about figuring the mileage because sometimes I have to put gas in it between the payday fill-up every two weeks if we have extra driving. IIRC, the last time we went out of town, to Austin and back, which is around 400 miles, we got around 14? Roads and traffic didn't allow for using cruise control so we didn't. I think loaded and pulling the 6×12 U Haul trailer it got 13; the last trip with that configuration was April 2019 so I'm not totally sure.....
The big local car show we just had over Thanksgiving weekend, we load in and out with a rental box truck; it's too many Burb trips for the limited time to get in and out of the building.