Top Vehicles MPG (US)
Gasoline cars, last 90 days...
1.2015 Suzuki Alto S67.23
2.2014 Mitsubishi Mirage ES (base)60.16
3.2005 Scion XA 58.03
4.2015 ford fiesta se sedan42.55
5.2015 Mazda MX-5 Special Package42.54
6.2007 Toyota Yaris 41.29
7.1991 Honda Civic DX40.52
8.2017 Honda Civic LX39.01
9.2024 Nissan Versa S 5MT38.7
10.2013 Honda Accord Coupe EX37.87
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.
 
Latest forum activity

What is Ecomodding?
Welcome to EcoModder.com, an automotive community where performance is judged by efficiency and economy rather than power and speed. EcoModders employ a combination of vehicle mods, driving techniques, and common sense to go as far as possible as inexpensively as possible. 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

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My 1991 Talon TSi Compound Turbo AWD My 1991 Talon TSi Compound Turbo AWD

It would almost be easier to list what hasn't been done engine wise to this car. Suffice to say that he gets mid 40 mpg with an auto, and is pretty darn fast. Check out this extensive build here.

Started by pgfpro in forum: EcoModding Central - 474 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 - 772 replies
CarBEN EV5 Full Sized Prototype Construction - 5 Seat Electric Car From Scratch

t vago t vago's MPGuino workspace thread, continued

Check out t vago's continuous enhancement of the multi-featured MPGuino fuel economy computer / gauge.

Started by t vago in forum: OpenGauge / MPGuino FE computer - 198 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 - 1316 replies
Buy a trailer (instead of a pickup truck)

You know you You know you're an ecomodder if/when...

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 - 2495 replies

Boat tail project based on a single wheel trailer...

BamZipPow's epic customization & refinement of a single-wheel, drag-reducing trailer used on his already extensively aero-modified 1998 Toyota T-100 pickup. "Mileage is averaging around 27mpg with the trailer," he says, which he estimates is about a 2 MPG improvement.

Started by BamZipPow in forum: Aerodynamics - 1084 replies
Boat tail project based on a single wheel trailer...

Aerodynamic streamline template - online tool (view streamlined extension on any car) Aerodynamic streamline template - online tool (view streamlined extension on any car)

Member seifrob made an online tool that overlays a streamlined template on an image of any vehicle to visualize the "ideal" extended low drag shape. Very useful for anyone considering building a drag-reducing Kamm back, full boat tail, box cavity, spoiler, etc.

Started by seifrob in forum: Aerodynamics - 188 replies

How to properly test modifications (AKA: don't believe every MPG claim you read)

Here on EcoModder we see a lot of claims made about the effectiveness (or lack of effectiveness) of specific modifications. It's an understatement to say not all claims are made equal. It all depends on how rigorous the test is.

Started by MetroMPG in forum: EcoModding Central - 120 replies
How to properly test modifications (AKA: don

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 - 1473 replies

1997 Civic CX to HX engine/VX trans swap! 63 MPG @ 62 MPH

When his 1997 Civic CX engine needed a lot of work, turbovr41991 decided to spend his repair time doing something different: he picked up a rusty Civic HX and swapped over the more efficient lean burn engine instead, and went with the more efficient gearing of the Civic VX. With a few other modifications in place, the car is returning seriously impressive highway fuel economy.

Started by turbovr41991 in forum: EcoModding Central - 188 replies
1997 Civic CX to HX engine/VX trans swap! 63 MPG @ 62 MPH

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 - 7381 replies

Efficient, cheap beaters! Used car ads: 35 mpg highway or more for $1500 or less

People often sign up on the forum seeking advice on cheap, economical beaters. The purpose of this thread is to go beyond the hypothetical, and post actual ads of actual available cars. They're out there, people. (Our non-North American members should feel free to laugh at our concept of 'efficient' little cars.)

Started by MetroMPG in forum: For Sale - 1475 replies
Efficient, cheap beaters! Used car ads: 35 mpg highway or more for $1500 or less

What is it?  (Spotted: rear engine TDI, custom aero body) What is it? (Spotted: rear engine TDI, custom aero body)

Member rjacob spotted this custom bodied mystery eco-car on the road in Rochester, NY. It's got a TDI badge on the rear, and that's apparently where the engine resides as well.

Started by rjacob in forum: EcoModding Central - 200 replies

94 Caprice Wagon 5.7L project--46 MPG so far

A huge boat of a vehicle modded to get some crazy good mileage.

Started by funkhoss in forum: EcoModding Central - 152 replies
94 Caprice Wagon 5.7L project--46 MPG so far

Full-boat-tail trailer with gap-fillers for Toyota T-100 pickup Full-boat-tail trailer with gap-fillers for Toyota T-100 pickup

Phil says: "The boat hull is far from ideal but using it will save hundreds of man-hours. Maybe 40 mpg HWY... we'll see. P.S. the trailer is large enough to serve as a rigid tent, for car-camping."

Started by aerohead in forum: Aerodynamics - 358 replies

A better alternator delete


Started by Daox in forum: EcoModding Central - 148 replies
A better alternator delete

Designing a header for fuel economy (for a Metro G10 1.0L) Designing a header for fuel economy (for a Metro G10 1.0L)

Daox walks through the steps on how to design a header to improve fuel economy for his Metro's G10 1.0L engine.

Started by Daox in forum: EcoModding Central - 129 replies

Aero RV (custom boat tail for '95 Ford E-350 Class C motorhome)

Orbywan says: "About a month ago I decided to build a boat tail for my 95 E-350 Ford 25 foot turbo diesel Class C motor home. I read the aerodynamics study NASA did at Dryden Air Force base back in the late 60’s on the squared off E-150 van about 20 times, as well as several other studies, drew up some plans and three weeks later and some serious sweat the prototype is done and tested." Initial results show about a 20% mpg improvement.

Started by orbywan in forum: Aerodynamics - 189 replies
Aero RV (custom boat tail for

"Short-shifting" a Jeep Patriot & Audi A4 CVT (forcing early "upshift") saves gas "Short-shifting" a Jeep Patriot & Audi A4 CVT (forcing early "upshift") saves gas

Does your car's automatic transmission have flappy paddles? What about a manual shift gate or shift buttons on the steering wheel? If so, you may be able to save fuel by wresting control from the computer over your upshifts. MetroMPG shares his experience in a Jeep and an Audi.

Started by MetroMPG in forum: Hypermiling / EcoDriver's Ed - 17 replies

VW Lupo 3L --> 2L

Vekke has taken one of the world's most efficient cars and is modifying it extensively for even better results. "Best fuel consumption so far is 2.24 L/100km at 80 km/h average speed, which equals 105 MPG (US) at 50 MPH avg. speed."

Started by Vekke in forum: EcoModding Central - 389 replies
VW Lupo 3L --> 2L


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Save fuel with a ScanGauge II fuel economy computer


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




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