Top Vehicles MPG (US)
Gasoline cars, last 90 days...
1.2011 Chevrolet Cruze 1LT205.59
2.1988 honda civic 4dr DX71.64
3.1992 Honda Civic CX63.03
4.1997 Honda Civic CX/HX62.05
5.1993 Geo Metro G1061.18
6.2009 Honda Fit Sport60.08
7.1991 Honda Civic Wagon DX60.03
8.1991 Honda CRX HF <><59.36
9.1995 Honda Civic VX58.99
10.1992 Honda Civic VX58.44
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
> Where to source Smooth Surfaced Rims from?
In Aerodynamics
> What's your longest eoc?
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> Gearhead from Spain. Old Civic, Olds & S10
In Introductions
> Brake rotor, pad, or hub bearing problem (or some combo of the three)?
In Off-Topic Tech
> Where to source Smooth Surfaced Rims from?
In Aerodynamics
> Record amount of carless households
In General Efficiency Discussion
> Custom DIY Smooth Wheel Covers
In Aerodynamics
> Notable eco-cars (old & new) spotted in the wild: post your pics!
In General Efficiency Discussion
> how much power does a turbo make
In EcoModding Central
> EM community, has anyone tried this?...or do it now!!!
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> Aero differences between my LX Civic and the Hybrid...mod inspiration?
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> 0W20 In Heavy Duty Diesels?
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> Project: The Electric Booger (budget EV conversion - '92 Mazda MX-3)
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In EcoModding Central
> Smoothies and Grill block on a prius. How much gained?
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> how much power does a turbo make
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> Experiment: smooth wheel discs tested A-B-A - 4.6% mpg improvement @ 65 mph
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> Record amount of carless households
In General Efficiency Discussion
> "Downgrade" my cam for more MPG?
In EcoModding Central
> 0W20 In Heavy Duty Diesels?
In EcoModding Central

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

Project: The Electric Booger (budget EV conversion - Project: The Electric Booger (budget EV conversion - '92 Mazda MX-3)

Mechman600 has joined the ranks of EcoModder members who have built a super-cheap electric runabout by being extraordinarily resourceful. His goals: "Cost: around $2000 - including the price of the car. It will get me to work and back - 6.5 km (4 mi.) each way on 60 km/h (36 mph) roads. My top speed goal is 80 km/h (50 mph) with a total range of 25 km (15 mi.)."

Started by mechman600 in forum: Fossil Fuel Free - 165 replies

Experiment: smooth wheel discs tested A-B-A - 4.6% mpg improvement @ 65 mph

Forum member Concrete tested smooth wheel covers on his 2000 Chevrolet S10 pick-up, and posted the data compared to the stock alloy wheels. A-B-A testing found +1.3 mpg -- that's about 4-5% depending on how you want to figure it.

Started by Concrete in forum: Aerodynamics - 308 replies
 Experiment: smooth wheel discs tested A-B-A - 4.6% mpg improvement @ 65 mph

Project - Extended Pop-Top Aerodynamic Camper Shell ( 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 - 297 replies

Project: ECOfamily Civic and its Aero Hitch Box

Christofoo says: "This thread will be about my forthcoming hitch-mounted cargo box boat-tail ... maybe the first project thread applicable to a sedan."

Started by christofoo in forum: Aerodynamics - 96 replies
 Project: ECOfamily Civic and its Aero Hitch Box

MetroMPG MetroMPG's Honda Insight boat tail extension (cardboard) tuft video; ABA test +9.7%

MetroMPG used CAD (Cardboard Aided Design) to make a 'temporary' aero tail for his Insight. The project thread includes a video of tuft testing the completed tail, and an A-B-A test that showed a 9.7% improvement in fuel economy at 80 km/h (5- mph). A more durable tail is planned as well.

Started by MetroMPG in forum: Aerodynamics - 148 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 - 132 replies
 Buy a trailer (instead of a pickup truck)

VW Lupo 3L --> 2L 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 - 278 replies

Experiment: coast down distances (rolling resistance) @ various tire pressures

Increased air pressure reduces a tire's rolling resistance - but is more pressure always better? Coast-down distances are measured for three different kinds of tires, with pressures ranging from 20 through 70 psi.

Started by MetroMPG in forum: EcoModding Central - 106 replies
 Experiment: coast down distances (rolling resistance) @ various tire pressures

Project Land Yacht (BMW 5-series EV conversion) Project Land Yacht (BMW 5-series EV conversion)

Jackbauer starts his next EV build. This time around its a 2001 BMW 5-series using a 13" forklift motor, 1200 amp controller, 15 kW charger, and 34.5 kWh of CALB grey cells.

Started by jackbauer in forum: Fossil Fuel Free - 52 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 - 362 replies
 CarBEN EV5 Full Sized Prototype Construction - 5 Seat Electric Car From Scratch

Golf cart based electric motorcycle build. Golf cart based electric motorcycle build.

The Goal: Build an electric motorcycle that can reach 60-65mph for under $1,500.

Started by Ryland in forum: Fossil Fuel Free - 85 replies

CRX HF reverse trike project

"groundflyer" and a friend are having fun modifying a 1988 Honda CRX HF into a three-wheeler. The rear side body is being tapered in behind the doors, and the floor pan will be tapered up.

Started by groundflyer in forum: EcoModding Central - 132 replies
 CRX HF reverse trike project

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 - 303 replies

Freezing the Slushbox. Torque Converter on-demand lockup switch.

Forum member orange4boy documents how he took manual control over the automatic transmission in his Toyota Previa van to force the torque converter to lock at will in any gear. (Note: requires an attentive driver to prevent potential damage). This modification gave him the largest increase in fuel economy of all his mods to date.

Started by orange4boy in forum: EcoModding Central - 236 replies
 Freezing the Slushbox. Torque Converter on-demand lockup switch.

Echo-Troll Modding Thread (2005 Toyota Echo) Echo-Troll Modding Thread (2005 Toyota Echo)

Follow the progress of an extensive aeromodding project on a 2005 Toyota Echo 1.5L , 5-speed. EPA : 30 City \ 38 HWY \ 33 Combined MPG (US). Modified MPG: 60 to 75 MPG in a 4.3 mile commute \ 60 to 67 mpg on the highway.

Started by echo-francis in forum: EcoModding Central - 202 replies

1955 Buick Special sedan - diesel conversion

Ingredients: 1955 Buick Special 4-door, 6.2L V8 diesel from an '84 Chevy 1500 pickup. Biodiesel planned.

Started by wndsofchng in forum: Fossil Fuel Free - 49 replies
 1955 Buick Special sedan - diesel conversion

You know you 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 - 1528 replies

BMW e36 318 tds - modding thread

Here's an interesting project: the award for worst drag coefficient in the e36 BMW 3-series range went to the 3-door hatchback. But AndrzejM likes the utility of the diesel BM hatch, so he's addressing the drag problem with the testing (see Kammback tuft testing video on YouTube) and construction of various other mods.

Started by AndrzejM in forum: EcoModding Central - 133 replies
 BMW e36 318 tds - modding thread

Lean burn Honda Civic sedan: 93 Civic d15z1 swap into LX 4 door (VLX) 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 - 163 replies

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


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