Top Vehicles MPG (US)
Gasoline cars, last 90 days...
1.1992 Honda civic VX87.42
2.2005 Toyota Echo 85.15
3.1992 Honda Civic CX79.41
4.1994 Honda Civic VX VX76.8
5.1999 Chevrolet Metro 73.52
6.1994 Geo Metro 70.91
7.1997 Geo Metro 68.15
8.1991 Honda Civic Wagon DX67.46
9.2009 Honda Fit Sport67.19
10.1993 Honda Civic VX66.42
More top-10 MPG lists:
hybrids, diesels, trucks, motorcycles & more
 
Highest MPG for a non-hybrid: Mitsubishi Mirage
Best non-hybrid MPG: 2014 Mitsubishi Mirage?
Mitsubishi says its new Mirage subcompact will get the best MPG of any non-hybrid: 44 mpg (US) highway, 37 city. (Some drivers are already beating that in various economy driving contests.) How? An efficient 1.2L, 3-cylinder engine, very light weight and aerodynamic design.
 
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> With my gas savings, I bought this! (2000 Honda Insight)
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> Civic VX with miss at 2k rpms
In EcoModding Central
> difference in drag during trips ~ aero or brakes?
In Aerodynamics
> 1992 Honda Civic VX CA car Oxygen Sensor Bad
In EcoModding Central
> Another win for the idiots.
In The Unicorn Corral
> 1992 Honda Civic VX CA car Oxygen Sensor Bad
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> OG's VX Build: HyperMile Driving with some JDM Styling
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> OG's VX Build: HyperMile Driving with some JDM Styling
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> Nice summary of mileage stretching
In Hypermiling / EcoDriver's Ed
> Interesting Aerodynamic Cars (Mike Vetter's ETV, also Avion)
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> Google gives up on renewables
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What is Ecomodding?
Welcome to EcoModder.com, an automotive community where performance is judged by fuel economy rather than power and speed. EcoModders employ a combination of vehicle mods, driving techniques, and common sense to squeeze every penny out of the pumps. Reasons for becoming a member range from the economical to the ecological. More info about where EcoModding came from.
 
Top picks from the EcoModder forum and blog

OG OG's VX Build: HyperMile Driving with some JDM Styling

Member OG VX documents the ongoing restoration/ecomodding of his 1992 Honda Civic VX with tons of details and photos. Already averaging 54 mpg (US).

Started by OG VX in forum: EcoModding Central - 207 replies

Old square sedan kammback

Joris documents the construction and testing of a nicely made aluminum-skinned Kammback on his (very squared off) notchback Euro Volvo sedan. The addition is cleverly attached at the drip rails and hinged to preserve access to the factory trunk/boot.

Started by Joris in forum: Aerodynamics - 63 replies
Old square sedan kammback

City ecodriving comparison: 2014 Mirage CVT vs. Mirage 5-speed vs. 1998 Metro 5-speed City ecodriving comparison: 2014 Mirage CVT vs. Mirage 5-speed vs. 1998 Metro 5-speed

Econobox fuel-sipping shootout, new vs. old school: MetroMPG was curious about the fuel economy potential of the 3-cylinder 2014 Mitsubishi Mirage. So he pitted a 5-speed manual Mirage against a Mirage CVT against his modified 1998 Geo Metro (Firefly) manual in a city MPG comparison.

Started by MetroMPG in forum: Hypermiling / EcoDriver's Ed - 69 replies

Almost OEM Lower grill block 2013 Subaru Impreza WRX STI

Jedi_sol's girlfriend gave him an ultimatum: either make those modifications look nicer, or I'm outta here! In true ecomodder fashion, he bought her a bus ticket home. Just kidding! He put in some time & effort to fabricate some nice looking fiberglass Subie grille blocks.

Started by jedi_sol in forum: Aerodynamics - 49 replies
Almost OEM Lower grill block 2013 Subaru Impreza WRX STI

Paul & Sabrina Paul & Sabrina's cheap DIY 144v motor controller

A thread and project of epic proportions where Paul designs a DIY 144V DC electric motor controller.

Started by MPaulHolmes in forum: Open ReVolt: open source DC motor controller - 6940 replies

You know you're an ecomodder if...

One of the more popular threads on EcoModder, this is a lighthearted and tongue-in-cheek look at the many potential signs and symptoms that you may be more interested in fuel economy than the average person...

Started by Tango Charlie in forum: The Lounge - 1824 replies
You know you

Notable eco-cars (old & new) spotted in the wild: post your pics! Notable eco-cars (old & new) spotted in the wild: post your pics!

Check out interesting and rare eco-cars that people have stumbled across, and share findings of your own!

Started by MetroMPG in forum: General Efficiency Discussion - 667 replies

Urba Centurion Update - (Kubota diesel, 100+ MPG in mixed driving - Fall 2012 on)

Changzuki describes the progress of this diesel-powered custom car, with Triumph Spitfire manual transmission and rear differential. Top speed from the 850 cc Kubota is 65 mph, and it's returning 100+ MPG in mixed driving.

Started by changzuki in forum: EcoModding Central - 303 replies
Urba Centurion Update - (Kubota diesel, 100+ MPG in mixed driving - Fall 2012 on)

Ren: My Ren: My '92 Civic

Following on the heels of the aesthetically entertaining, aero-modified Project Anal Probe (1992 Ford Probe), Sven7 is well underway in the transformation of his latest steed into an even more efficient and unique looking machine.

Started by Sven7 in forum: EcoModding Central - 368 replies

Commercially produced aerodynamic pickup bed cap

Brett Herndon is a genuine craftsman who has combined his skill in clay modeling with his knowledge of aerodynamics to produce a professional quality aerodynamic truck cap which will literally pay for itself in gas savings. It's unlike anything you've seen before: it can be used as a big hatchback, transformed into a conventional box cap, or have its top removed to make room for oversize loads. Brett is taking his handiwork into commercial production, and is a success story waiting to happen.

Started by MetroMPG in forum: Aerodynamics - 503 replies
Commercially produced aerodynamic pickup bed cap

Aeromodded Civic VX 72mpg (image heavy) Aeromodded Civic VX 72mpg (image heavy)

Ecotex shares with us his father's modified Civic VX that gets very impressive mileage.

Started by ecoTex in forum: EcoModding Central - 305 replies

CarBEN EV5 Full Sized Prototype Construction - 5 Seat Electric Car From Scratch

NeilBlanchard has begun the construction process to build the full-sized prototype of his aerodynamic 5-passenger electric car he's nicknamed "CarBEN EV5". The prototype is being assembled with rigid foam sheets cut on a CNC machine.

Started by NeilBlanchard in forum: DIY / How-to - 649 replies
CarBEN EV5 Full Sized Prototype Construction - 5 Seat Electric Car From Scratch

15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed

A collection of mosty small & inexpensive mods, from aerodynamic to electrical to gearing changes (through oversize tires) result in an average 15% mileage improvement in a 2007 Civic.

Started by MetroMPG in forum: EcoModding Central - 38 replies

Project Extended Pop-Top Aerodynamic Camper Shell ('99 Tacoma)

The design criteria for this fiberglass-over-foam project: extended to the end of the lowered tailgate for maximum room (and further reduced aero wake); enough room in the "up" position for a raised floor to store gear beneath while still having room to sit up and move around comfortably; simple and convenient to use.

Started by a8ksh4 in forum: Aerodynamics - 342 replies
Project Extended Pop-Top Aerodynamic Camper Shell (

208 km (129 mi.) in EV mode with a 2007 prius plugin 20kWh 208 km (129 mi.) in EV mode with a 2007 prius plugin 20kWh

Planetaire shares his very nice 2nd gen Prius PHEV conversion.

Started by planetaire in forum: Hybrids - 19 replies

Speed vs. MPG charts (post 'em if you got 'em)

The speed at which you choose to drive has the biggest impact on your highway fuel consumption. This fact is nicely demonstrated by this collection of graphs showing the relationship of MPH to MPG in a variety of vehicles, from a 55 hp Geo Metro to a 505 hp Corvette, and many others in between.

Started by bluejoey in forum: Hypermiling / EcoDriver's Ed - 149 replies
Speed vs. MPG charts (post

Kill Switch (EOC): Where did you install your activator? And what did you use? Kill Switch (EOC): Where did you install your activator? And what did you use?

Shutting off the engine in a manual transmission car while coasting or when stopped (with any transmission) is an advanced efficiency driving technique that can save a lot of fuel. An ergonomically placed kill switch makes the process easier, safer, and saves wear on the ignition switch. This thread shows multiple installations.

Started by myrefugeisintheLord in forum: DIY / How-to - 202 replies

Buy a trailer (instead of a pickup truck)

This is a thread for anyone thinking about getting a pickup truck as a first or second vehicle when adding a trailer to your car would do instead (and save you lots of fuel & money).

Started by oil pan 4 in forum: General Efficiency Discussion - 448 replies
Buy a trailer (instead of a pickup truck)

Heating the transmission with engine coolant Heating the transmission with engine coolant

A good brainstorming discussion about methods for speeding up the warming of the transmission's gear oil.

Started by Daox in forum: EcoModding Central - 119 replies

Slow progress but progress (DIY two seater tadpole trike, 9hp Honda diesel)

Old Mechanic is developing an efficient, aerodynamic platform for a tadpole vehicle with the flexibility to run various drivetrains, including (ultimately) his patented hydraulic hybrid drive system. Initial plans are to power it with a single cylinder Honda diesel mated to a Harley 5 speed.

Started by Old Mechanic in forum: EcoModding Central - 354 replies
Slow progress but progress (DIY two seater tadpole trike, 9hp Honda diesel)


Save fuel with a ScanGauge II fuel economy computer


Read review & learn more

Chevrolet Aveo forum: discussion of the Chevy Aveo and its siblings (Pontiac Wave, Pontiac G3, Suzuki Swift+, Daewoo Kalos).

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