Best MPG You've Gotten

[Nick1994]

The post on cars with the highest mileage made me think a post on best mpg would be interesting.

My brother followed behind me in my Camry while I was driving a 26' Uhaul with a 12' Uhaul trailer to San Diego.
It was almost 200 miles of 70 mph with no A/C, the Uhaul took the majority of wind resistance and it got 37.1 mpg on the best fill up. I'm sure he wasn't purposefully driving it easy either. I have no doubt it could get close to this mpg without the lack of wind resistance from the Uhaul if driven easy.
My best tank in my previous 1997 Camry was round trip of pretty mountainous driving, got 36.72 mpg.
Best tank in the 2004 VW Beetle TDI auto was 44.3 mpg.

What's the best mpg you've gotten in your car?

 

[CarbonSteel]

1981 Rabbit Diesel = 55 mpg
1992 Toyota Celiac GT = 31 mpg
1996 Corvette LT4/ZF6 = 32 mpg

 

[onemig]

2009 Honda Fit Sport 5MT @ 41.8 MPG

 

[AKhan87]

2001 Toyota Celica GT
best: 36 mpg @ 80-85mph highway cruise.

I have done about 120-125 mph(not limited, just following someone else) for about 100 miles 3-4 times, the vehicle still got 33 mpg, which is what it usually averages, I have no idea how a car averages the same mpg at those speeds

 

[AKhan87]

Originally Posted By: onemig
2009 Honda Fit Sport 5MT @ 41.8 MPG
how fast were you cruising?

I wouldn't have the patience to cruise at anything less then 80 mph on long highway drives.

 

[ls1mike]

Not in any of the cars I own now, but our 02 Jetta TDI would get 48 on the highway.

Trans Am will pull down 26 to 28 on the highway in 6th gear with it's current mods.

Truck gets about 8 towing and 15 empty.

 

[onemig]

Originally Posted By: 01_celica_gt
Originally Posted By: onemig
2009 Honda Fit Sport 5MT @ 41.8 MPG
how fast were you cruising?

I wouldn't have the patience to cruise at anything less then 80 mph on long highway drives.


Around 65 MPH for the entire tank.

 

[RooflessVW]

The best I have ever gotten was 39 mpg in my old Mercedes diesel.

My 3 cars now average 17 (Phaeton), 19 (X3 3.0i), and 16 (E23 735i). They all see about 23ish on long highway trips, but getting into town murders my fuel economy.

The most I've ever paid for gas was when I had my E32 750il in Germany. €1.89/l and 14mpg to and from work. Mmmmmm

 

[gabriel9766]

My 2015 malibu all higway when i first bought her like 34-38mpg

 

[mehullica]

2000 Echo 5-speed. 46-48 mpg @ 70 mph with a 1,000 ft mountain on the commute

 

[dishdude]

99 MPG when I coast down hills.

 

[Silk]

I used to get 100mpg out of my 1938 Chev Coupe - that's oil, not fuel consumption.

 

[faramir9]

44.96 mpg in the Saturn SL1 in my sig, last year, 290-mile trip east from NE Ohio to NE PA, 99% interstate.

Wanted to see if I could match the mid-40s highway mpg I read about on Saturn sites but never saw myself. I cleaned the throttle body, pumped up the tires to 40 psi (51 sidewall max), threw in a bottle of Techron, filled up with Shell V-Power and kept it to 55-60 mph on the highway, mostly I-80. Had to speed up to 65 mph a few times to avoid getting rear-ended and run off the road, mostly by truckers playing the "hill game" in central PA.

Came so close to the magic 45 mpg. Maybe next time.

 

[dareo]

55 mpg in a 2003 jetta tdi 5mt, vacation tank average of 70 mph. Similar trips in a gas 2014 accord 6mt net only 35 mpg.

 

[Nick1994]

Next time I head out of town to visit my dad I'm going to hyper-mile the Camry the best I can to see what I can squeeze out of it. I'll remove lots of weight, the hubcaps, maybe even get out the blue scotch painters tape and tape up the hood gaps, over-inflate the tires, drive very lethargic etc.

Maybe I can get close to 40? Car is rated for 28 mpg highway... It's an automatic.

 

[Jetronic]

66 Mpg on 3 oocasions

usually 41 MPG for town driving

all US gallons

 

[Gasbuggy]

I've been into the Ecomodder thing in the past. Best full tank MPG on my both performance and economically modded 05 CTS-V 30.1 MPG. Best single trip 33.7mpg. EPA highway rating is 21.

My best tank on my Accord was 38. Grill block, 46 PSI in the tires, empty trunk, passenger mirror turned in, zero'd alignment in the front, shutting down while stopped, coasting in neutral when possible.

My best tank on a 98 Cavalier with a 3 speed auto was 34.8. Grill block, 46psi tires, lots of coasting.

Best tank of the Jeep was 21.

 

[Garak]

I haven't had a lot of econoboxes, but my biggest outlier in fuel economy was when my Town Car got 44 miles per Imperial gallon going to Saskatoon. I had a tail wind of over 60 mph. You don't want to know what the mileage was on the way back into that wind. It was something like 18 miles per Imperial gallon, and I was not going fast either, doing the double nickel.

 

[Olas]

Best I've measured in the Scirocco was 44mpg, or as near as darn it 10 miles per litre.

The best I could attain in theory is infinite mpg, rolling down a hill with the engine off.

Lowest number was circa. 19/20 mpg at Oulton Park circuit

 

[wirelessF]

2002 Silverado 5.3L ECSB 2WD: Best 15.4 MPG worst 14.99 over three months.