What's your best average MPG?

"macanamera" (macanamera)
06/05/2014 at 13:51 • Filed to: None

Citizens of Oppo! Around a week ago, we did :

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Now, lets flip it around. This time, show me the best average MPG you have achieved! Same rules, meaning at least 5 miles for the distance, and average MPG's only (please don't take a picture of the instant MPG gauge in your H2 reading 99 MPG while driving downhill in neutral). This time, I want to see how much we can beat the manufacturer estimates by.

From Merc's website:

And what I was able to get:

(Note: This was done on the highway at the lowest possible RPMs in 7th gear with the windows up, A/C off, slipstreaming an 18-wheeler. Basically, everything short of folding in the side mirrors and taping the panel gaps. I am proud of this.)

So, I beat Merc's estimate by ~21.3%. I'm sure you have way better. No need for pics if you don't have them, just tell us your best vs. what the manufacturer estimates for your car.

DISCUSSION (60)

Opposite Locksmith > macanamera
06/05/2014 at 13:56

I once got 89 mpg in my Subaru for 1 mile. 0 throttle whatsoever, engine braking for 1 mile from 150 mph

HammerheadFistpunch > macanamera
06/05/2014 at 13:56

I got 15.4 once...what a day! I've seen 55.3 in the car though.

daender > macanamera
06/05/2014 at 13:56

I got 33 mpg with the Miata but that was a lot of highway travel and taking advantage of engine-braking/coasting with the injectors turned off.

MontegoMan562 is a Capri RS Owner > macanamera
06/05/2014 at 14:00

I have seen 99 in the 07 milan, down a big hill, and all the way up and over the next one.

Realistic, though, without worrying about slipstreaming and with max AC on last week i was cruising at 80 mph with 31.9 mpg. EPA= 26. I was able to hold that mpg on flat surfaces for over 30 miles so it wasnt a fluke. I've seen 34 before but not for as long of a period of time. Oh and the car wasn't empty, had a big ass stroller in the trunk and a car seat installed in the back

The EPA estimated combined is 21, I typically when mixing city and highway get 21.9.

macanamera > HammerheadFistpunch
06/05/2014 at 14:02

55.3? What's the manufacturer estimate?

macanamera > daender
06/05/2014 at 14:02

Nice! What's the manufacturer estimate for your Miata?

macanamera > MontegoMan562 is a Capri RS Owner
06/05/2014 at 14:04

So you are like 23% over the estimate as well... Maybe 23% is the magic number.

ESSSIX GmbH - Accountant/Wagon Thumper > macanamera
06/05/2014 at 14:06

15 mpg is my best....yay turbo...lol

HammerheadFistpunch > macanamera
06/05/2014 at 14:06

42 highway. that's diesel for you consistently beating the EPA estimates. hell i got 39 on my last fillup, 99% city (34 epa city)

macanamera > HammerheadFistpunch
06/05/2014 at 14:08

Whoa, 31.6%. That's the most so far.

blackchair > macanamera
06/05/2014 at 14:09

'13 Kia Rio used to have a 40mpg rating but people were made because they were never getting that. So they lowered it to 37 I think. I don't have any issues though. I regularly get around 43 going to work on the highway with traffic. Lots of engine breaking I guess.

Verdog ~ manual Bro, Bro - HellHawk Equipped > macanamera
06/05/2014 at 14:09

Kinja'd!!!

macanamera > Verdog ~ manual Bro, Bro - HellHawk Equipped
06/05/2014 at 14:10

Whoa, what am I looking at?

RamblinRover Luxury-Yacht > macanamera
06/05/2014 at 14:10

My best was ~48 MPG, in a diesel Rabbit pickup (GA to NC trip, unloaded). No idea what mfr. alleged was, but that's a pretty typical number. Apparently TG US put a modern diesel in a normal Rabbit with aero and weight mods and broke 80.

legacy06 > macanamera
06/05/2014 at 14:12

2006 Subaru Legacy 2.5i 5-spd manual

EPA rating: 20 city/22 combined/27 highway

Lifetime average: 29.89 MPG (34,897 miles, 1,167.63 gallons, $3,930.12)

Best tank: 33.9 MPG

Worst tank: 24.8 MPG

I drive on the highway a lot...

Verdog ~ manual Bro, Bro - HellHawk Equipped > macanamera
06/05/2014 at 14:12

Its the fuelly tracker for the my PowerWagon.

fuelly.com

PoorBoysRacing5389 > macanamera
06/05/2014 at 14:12

42.2mpg in my Fiat500

http://www.fuelly.com/dashboard/

daender > macanamera
06/05/2014 at 14:13

Fuel economy dot gov says about 26 highway and 23 combined but I was able to crank out 27 mpg in combined situations and shifting later to enjoy my new exhaust note.

Just4GP > macanamera
06/05/2014 at 14:13

I managed to get 22MPG a couple of times in a W215 AMG. That was a struggle to do. My worst that I can recall was 8

PoorBoysRacing5389 > PoorBoysRacing5389
06/05/2014 at 14:13

http://www.fuelly.com/driver/poorboy…

Nibbles > macanamera
06/05/2014 at 14:16

None of my vehicles have fancy readouts, but here's my MPGs

2007 Focus SES PZEV: EPA rated 26/31. Regularly see 26MPG mixed, avg 32.4 highway. Saw 42 hwy once, road tripping to Florida drafting behind a U-haul truck

1995 Dakota 5.2 4x4 5MT: EPA rated 11/16. Regularly see 18.5MPG mixed, avg 17.0. Best I've seen is 19.2 mixed

1987 Saab 900 SPG 2.0T 5MT: EPA rated 19/24. These numbers LIE oh do they LIE! I never saw less than 22 city, with a lead freakin' foot. My average, 34.5 mixed. Best, 38.0 road trip from Denver to some lake in Wyoming

Big Bubba Ray > macanamera
06/05/2014 at 14:16

Last fill up in my OB I was very proud to achieve a 27.4 average mpgs.

That included driving to class daily (30 mile round trip) work (10ish miles) and the occasional back road hooning.

macanamera > daender
06/05/2014 at 14:16

So 33 highway vs 26 estimated highway...27% better. Nice.

macanamera > Verdog ~ manual Bro, Bro - HellHawk Equipped
06/05/2014 at 14:16

Oh cool. Do you know the manufacturer estimate?

macanamera > legacy06
06/05/2014 at 14:18

Sounds like you are between 26%-27% over estimates. Well done.

midengineer > macanamera
06/05/2014 at 14:18

19.5 with all of 4 cylinders drinking up fuel.

macanamera > blackchair
06/05/2014 at 14:18

So you beat estimates by 16.2%

macanamera > Just4GP
06/05/2014 at 14:19

What motor?

Verdog ~ manual Bro, Bro - HellHawk Equipped > macanamera
06/05/2014 at 14:19

Not Rated. Its a heavy duty vehicle so they don't rate them.

macanamera > PoorBoysRacing5389
06/05/2014 at 14:19

What the manufacturer estimate for a 500?

macanamera > PoorBoysRacing5389
06/05/2014 at 14:20

Broken link :(

macanamera > Nibbles
06/05/2014 at 14:24

Focus- 35.4%

Dakota- 20%

Saab- 58.3% (currently the highest by far, winning.)

macanamera > Big Bubba Ray
06/05/2014 at 14:24

What is an OB? My brain doesn't work right now.

macanamera > Verdog ~ manual Bro, Bro - HellHawk Equipped
06/05/2014 at 14:25

That's how you know its good.

Big Bubba Ray > macanamera
06/05/2014 at 14:28

Subaru Outback. I'm to lazy to always type the full name so I abbreviate it as OB haha

macanamera > Big Bubba Ray
06/05/2014 at 14:30

Oh cool. Do you know what the manufacturer estimates?

Dsscats > macanamera
06/05/2014 at 14:39

Kinja'd!!!

Subaru Forester

cazzyodo > macanamera
06/05/2014 at 14:39

I filled up at a station right on the highway, cruised in 6th for 10 miles, glided all the way off the ramp through a light, down a hill and into my driveway for about 35mpg. ST's highway was 32 haha.

Cé hé sin > macanamera
06/05/2014 at 14:40

Kinja'd!!!

macanamera > Dsscats
06/05/2014 at 14:43

Wow. What's the estimate?

macanamera > Cé hé sin
06/05/2014 at 14:44

Dang! What car? If this is average, it might be the best mpg number I've ever seen.

macanamera > cazzyodo
06/05/2014 at 14:44

Well, you beat it by 10%!

cazzyodo > macanamera
06/05/2014 at 14:45

When I had my Fusion I somehow managed 42mpg on a 45 mile trip to visit my grandparents...pretty sure the Fusion was rated at 33mpg or so. I was blown away.

macanamera > cazzyodo
06/05/2014 at 14:48

Nice. That's ~36% over...

MontegoMan562 is a Capri RS Owner > macanamera
06/05/2014 at 14:51

Maybe it is!

Cé hé sin > macanamera
06/05/2014 at 14:53

Those are miles per imperial gallon and it's about 58 in your money, but still.

It's a 1.6 diesel Focus and an average over about three hours driving outside town.

BigBlock440 > macanamera
06/05/2014 at 14:53

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High of 34 one tank, got 30+ on three other tanks, usually averaged 22-25 in my '98 Stratus.

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Best of 28.X in my '05 Stratus, could probably break 30, but haven't yet. Also, E85 was around 24, but neither time was a full tank of e85 (had 1/4 tank or so of e10).

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Used to regularly get 19 in the truck until I put offroad tires on it, then it dropped down to where it "should" be.

macanamera > Cé hé sin
06/05/2014 at 14:55

Excuse my ignorance here, but what do you mean miles per imperial gallon? What is an imperial gallon? What do you mean 58 in our money?

Cé hé sin > macanamera
06/05/2014 at 15:03

In the US you use a gallon of about 3.8 litres which I think comes about because your pint has 16 fluid ounces. The rest of the world (well those who still use gallons) have a gallon of 4.545 litres called the imperial gallon which has pints of 20 fluid ounces. 69.5 mpg here is therefore about 58 mpg there.

macanamera > Cé hé sin
06/05/2014 at 15:12

Very interesting, thanks. Do you know the manufacturer estimate for your Focus?