r/hypermiling

If so, how’s that going for you?

Please list the year make, model, engine displacement, epa combined mpg and your mpg

I average 8 mph because I'm always in city traffic and can't beat the 40mpg you are supposed to get in a city with my crv hybrid.

Does anyone have any insight into when the supposed advantage of city driving becomes a disadvantage due to too much stopping?

Or is anyone proving this to not be the case?

If you don't have experience or special knowledge about vehicles averaging less than 10 mph for all their driving, maybe your comments won't be as valuable.

edit: i did some more research to add to my point. The epa uses 21mph average for its city ratings and tops out at 56mph. The citywide speed limit in NYC is 25mph, so no one there will ever match epa conditions.

As one commenter has pointed out, 0 mph average is obviously bad mpg. 21 mph is better mileage than 48 mph for hybrid cars (what the epa uses for highways). Where is the number below 21 where it starts to get worse?

Hi everyone! I've had a 3.0L CDI (turbodiesel) Merc for about a month now and I am utterly staggered by the fuel economy (in a good way), considering the 3L V6 engine, auto transmission and curb weight of 1,850kg unloaded. I have always got good fuel economy in all sorts of cars for what they are - I've always tried to drive smoothly and gently, but this Merc really does impress me.

Most of its driving is in dense urban environments with frequent stops for work (basically worst case scenario) and it still achieves ~28-32MPG UK (10.1 - 8.8 L/100km) under these conditions.

This has had me thinking about what I could do to stretch the fuel economy a little further. I'm already planning on having it remapped on a rolling road to tune the engine for lower RPM driving. However I'd like to take it to somewhat of an extreme by covering the sporty-styled wheels and making other mods.

The thermostat already kicks the fan in on warmer days as a fair amount of the day is spent in traffic and the car doesn't feature an engine stop-start system, so I'm reluctant to block off any airflow until Winter comes back around. I'll also try some quiet and efficient tyres at some point in the future, but car tyres are bloody expensive!

I'm going for a longer drive in the countryside today and will see what fuel economy I achieve. I'll run a proper control test before any mods in the future, late at night so traffic is a lesser factor.

I was wondering what other people have done, or considered doing, to get better fuel economy from their cars. I'm not after overall monetary savings, just maximum MPG. I'd be quite happy to spend more on mods then I'd save on my fuel bills. If anyone wants to know what car it is for the airflow, it's a pre-facelift 2011 CLS.

I'll keep this thread updated with mods and their approximate effects on fuel economy.

Sedans are the best vehicle for Hypermiling due to their aerodynamic shape, change my mind

If you want to hypermile and get 40+ mpg, you’ve gotta get something aerodynamic (aka a sedan)

Look at sedans and how they perform in wind tunnels; their shape minimizes drag and allows you to maximize fuel economy (I highly doubt you can be that aerodynamic in a hatchback)

This video might change a few of my driving habit.

I'd like to share this video I made of a very long economy run

So I’m in the U.K. and looking at selling my e46 to buy a much better efficiency car as I now commute 40 miles a day, approx 10 of b roads and 10 of dual carriageway each way. Budget of £2.5 max
What would you go for?