My Pontiac Firefly / Chevrolet Metro / Geo Metro / Suzuki Swift welcomes fuel efficiency nerds everywhere

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Latest fuel economy stats
for my '98 Firefly 1.0L 5-speed
  best: 2.3 125.1 104.2
 worst: 6.4  44.1  36.8
prev.3: 3.3  82.3  68.6
   all: 3.8  73.4  61.1
L/100km | mpg IMP | mpg US
Jul 28/07: more, graph, calc.
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Best non-hybrid MPG: Mitsubishi Mirage
Highest MPG for a new car: Mitsubishi Mirage?
Mitsubishi's 1.2L, 3-cylinder Mirage is the first new non-hybrid car that can match an old Metro's mileage. The company says 44 mpg (US) highway, 37 city. (Some drivers are already beating that in various economy driving contests.) How? An efficient engine, very light weight and aerodynamic design.

Cheapest to own? 2015 Nissan Micra Forum
2015 Nissan Micra Forum
The Micra's fuel economy isn't its most notable feature -- the $10,000 price is. That makes it one of the cheapest cars to own. And its 109hp, 1.6L engine and good power-to-weight ratio means it's fun to drive too.

Latest 10 posts:
1. Recipe for getting 99.7 mpg from a Geo Metro
2. - famous aerodynamic Honda Civic gets a web site
3. Snapshot: effect of tire pressure on rolling resistance
4. 65+ vehicle modifications for better MPG
5. Metro mania: forget stocks, put your money in old Geos!
6. 100+ Hypermiling / ecodriving tips for better gas mileage
7. Experiment: how long should a block heater be plugged in?
8. Everything old is new again: Car and Driver magazine modifies an econobox to improve MPG
9. Project Convertible XFi: alfresco efficiency
10. The floor is yours: MetroMPG opens a fuel efficiency forum
11 ... 64. Show all posts

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Good MPG forums: I spend a lot of time at and have also been known to lurk around

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

> Lots more Metro links...
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Send me a note:
darin AT metrompg D-O-T com,
or here

MetroMPG has opened a fuel economy forum
Read about the project here, or go straight to
ScanGauge fuel economy computer Save fuel with a ScanGauge II fuel economy computer.
I personally recommend this tool. I've owned both versions (I and II) and can't say enough good things about it. If you're serious about saving fuel, get one.

For more information and to order, visit EcoModder.

The floor is yours: MetroMPG opens a fuel efficiency forum

Posted Tuesday, December 11/07 in General - the floor is yours!

OK, you win!

When I originally set up this site, I made a decision not to include visitor comments with the articles, thinking it would create too much work. Instead, I invited e-mail and responses submitted through the feedback page.

Well, let me tell you something: visitors are a chatty bunch! Since day one, I've received & answered literally hundreds of messages ... and lately the rate has been increasing. (So much for saving work.)

So with that in mind, I recently conceded defeat. But in a good way - with the launch of, a brand spanking new discussion forum about efficiency modifications, eco-driving techniques and fuel economy in general.


Now don't get me wrong: I genuinely appreciate all the questions and feedback you've sent, and I'll continue to receive and reply to them. I'll also continue to post new articles here at

Ecomodder forum screen cap
Forum screen shot: Peakster demonstrates the effects of side mirror drag on his '97 Metro.

But there's no question: answering individual messages is (ironically) NOT a very efficient way to discuss efficiency. A forum is best, hands down.

I've already opened three threads based on questions/topics that came from MetroMPG visitors in the past few days:

Instead of just writing e-mail replies, I let the original questioners know that I started an Ecomodder thread from their question or comment, posted my response, and opened the floor for discussion. Using this format, more people can benefit from and participate in the exchange.

No Metro is an island...

I don't mean to create the impression that I'm solely responsible for I'm definitely not!

It's a group effort, undertaken by a group of efficiency enthusiasts - including Ben, who operates

In addition, there are several knowledgeable and engaging moderators on board as well.

What the heck is an ecomodder?

In a nutshell, ecomodder is a term we coined for people who are "green gearheads".

These are folks who...

  • are passionate about efficiency - people for whom "high performance" means miles per gallon, not miles per hour;
  • are interested in mods & tweaks that improve fuel economy;
  • are serious about adjusting the nut behind the wheel - using super-efficient driving techniques (also known as hypermiling or eco-driving).

If you're still reading this, it's probably safe to say you're an ecomodder too.

So what are you waiting for? The doors are open, and the floor is yours. logo - fuel economy forum


EcoModder fuel economy forum Note: MetroMPG has opened a fuel economy forum
Read about the project here, or go straight to

darin AT metrompg D-O-T com, or here