Top Vehicles MPG (US)
Gasoline cars, last 90 days...
1.2000 Chevrolet Metro 58.31
2.1998 Honda Civic DX Coupe57.71
3.2004 Saturn Ion 54.24
4.2000 Honda Insight 53.48
5.2009 Honda Fit Sport50.59
6.1991 Geo Metro Base47.57
7.1997 Honda Civic DX46.05
8.2005 honda civic lx45.52
9.1996 Honda Civic LX45.25
10.2014 Mitsubishi Mirage DE45.07
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 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

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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 - 7288 replies

Another truck aero cap idea...

Follow the evolution of BamZipPow's aerodynamic cap for his 1998 Toyota T-100 pickup.

Started by BamZipPow in forum: Aerodynamics - 389 replies
Another truck aero cap idea...

Taller Tire Test (5.7% MPG increase observed on Honda CR-Z @ 55-65 MPH) Taller Tire Test (5.7% MPG increase observed on Honda CR-Z @ 55-65 MPH)

The purpose of the test was to determine whether larger diameter tires, which result in lower engine RPM and higher load for a given speed, can improve gas mileage. The test car has a 6-speed manual transmission. At highway speeds (55-65 MPH), the larger tires gave a 5.7% average increase in MPG. The engine ran about 200 RPM lower.

Started by SecondWind in forum: EcoModding Central - 70 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 - 732 replies
CarBEN EV5 Full Sized Prototype Construction - 5 Seat Electric Car From Scratch

Aero RV (custom boat tail for 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 - 175 replies

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 - 1223 replies
Notable eco-cars (old & new) spotted in the wild: post your pics!

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 - 2259 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 - 608 replies
Efficient, cheap beaters! Used car ads: 35 mpg highway or more for $1500 or less

Replace your car battery with capacitors! Replace your car battery with capacitors!

A good discussion on replacing a starting battery with ultra capacitors in cars, trucks, and motorcycles.

Started by redneck in forum: EcoModding Central - 330 replies

Lean burn Honda Civic sedan: 93 Civic d15z1 swap into LX 4 door (VLX)

4-door efficiency: slownugly is buttoning up this project where he took the lean burn engine from the iconic Civic VX and swapped it into a sedan body. "Goals: 50 MPG average while maintaining stock appearance. It will be the economy sedan Honda never made in this generation."

Started by slownugly in forum: EcoModding Central - 182 replies
Lean burn Honda Civic sedan: 93 Civic d15z1 swap into LX 4 door (VLX)

Automatically actuated grill block - Mk3 Automatically actuated grill block - Mk3

Daox designs an automatically actuated grill shutter. The design is nearly fully 3d printed and controlled via an arduino.

Started by Daox in forum: Aerodynamics - 139 replies

Recumbent Honda 90

Ironside customizes and aeromods his Honda 90 motorcycle into a recumbent.

Started by Ironside in forum: Motorcycles / Scooters - 164 replies
Recumbent Honda 90

Commercially produced aerodynamic pickup bed cap 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 - 540 replies

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 - 166 replies
t vago

Tall tire test (taller gearing advantage offset by wider, heavier wheels/tires?) Tall tire test (taller gearing advantage offset by wider, heavier wheels/tires?)

Taller tires mean reduced cruising RPM, which is good for fuel economy. But what if the taller wheels/tires are also wider (which increases aero drag) and heavier? SentraSE-R tested his Scion Xb to find the answer.

Started by SentraSE-R in forum: EcoModding Central - 97 replies

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

Buy a trailer (instead of a pickup truck) 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 - 849 replies

Project 100 (custom enclosed Honda C90 targets 100 mph vmax and 100 km/L FE)

Forum member visionary is custom-building an enclosed motorcycle with the goal of achieving 100+ mpg at its cruising speed of 70 mph, from an engine displacement of 100 cc.

Started by visionary in forum: Motorcycles / Scooters - 385 replies
Project 100 (custom enclosed Honda C90 targets 100 mph vmax and 100 km/L FE)

PICS! Econo Car conversion to Kubota Diesel.  1997 Geo Metro, Kubota D1005 3 cylinder PICS! Econo Car conversion to Kubota Diesel. 1997 Geo Metro, Kubota D1005 3 cylinder

Planejob is making great progress on dieselizing his Metro. His goal: "I want something that seats 3, sounds like a tractor, gets great mileage, and looks insane (aero mods)." No doubt that's going to happen.

Started by planejob in forum: EcoModding Central - 238 replies

Have you ever given 1-on-1 ecodriving instruction? (Here's how I did it.)

MetroMPG walks us through his recent experience of teaching individual "non-hypermilers" about ecodriving. With just an hour-long session, each driver's results showed an immediate increase in fuel economy above their car's EPA ratings.

Started by MetroMPG in forum: Hypermiling / EcoDriver's Ed - 111 replies
Have you ever given 1-on-1 ecodriving instruction? (Here


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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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