Comments on: Geo Metro Modification List for Mileage

By: dave

dave — Wed, 16 Dec 2009 17:29:35 +0000

I have run 185/70-14 tires on the front of my 1991 for over a yr. that’s 15% greater distance per axle revolution. so 15% more MPG. 155-12 on the rear. I also run 10% above the Max. PSI on tires less than 3 yrs old. a bit harder ride. The bad news is they rub on some bumps and corners. To the point of bending the fender and cutting the tire. It may be the old springs but next time I will go with 175/70-14. The 14 wheel is off a Swift GT. ATV lug nuts are necessary as the holes are bigger.

By: Chris Taylor, Jr.

Chris Taylor, Jr. — Sat, 10 Oct 2009 00:21:48 +0000

YES but if your shooting for max mpg you would not be accelerating hard anyway

By: Peter Wildermann

Peter Wildermann — Thu, 13 Aug 2009 03:50:38 +0000

I have a 93 Metro, 3 cylinder. Was 4 cylinders an option?
This is a great site with great ideas. However;
If you increase the rim and tire size from 12″ to 13″, won’t you lose some low end power. Won’t the car have slower acceleration?

By: Steve

Steve — Mon, 08 Jun 2009 19:12:07 +0000

I have read your ways to save on a geo. I have a 91 Geo metro. I have done a few things that you have listed. And they WORK!!! Also you may try a what I call a pre heater for the fuel. My brother-in-law came up with this. And i got about 5 mpg more with it. It’s to bad you cann’t use it on newer cars.

By: Ron Collins

Ron Collins — Fri, 31 Oct 2008 00:38:17 +0000

Is there a higher final-drive gear setup available that can be used in the automatic Geo Metro 1 L. to help with the MPG? I bought a ’92 convertible and got 35 MPG on the interstate driving 65-70 MPH on the trip home with the car. I will be installing the XFI cam grind from Delta Camshafts in a few days. Here are 2 sources for new OEM-like cams and other Metro engine rebuild parts including crankshafts:
http://www.partsdinosaur.com and http://www.rpmrons.com .

By: Tobias Davis

Tobias Davis — Sun, 27 Jul 2008 02:06:11 +0000

I have a 94 Geo Metro, took the carpet out for some other mods: No soundproofing on floor! Some was on the sidewalls, I scraped it off and put lighter and better quality soundproofing on it, but I am going to fill in that huge space to the side of the rear passengers with a bass expander for my stereo: Not a lot of extra weight, but a real nice noise!

Thanks for your web-site, it’s what inspired me to buy a Geo (automatic, unfortunately) and I get 50 pretty easy already with no real mods. I am not convinced I want to remove the spare and jack, but I am thinking about something along those lines… Maybe put it in for long long trips?

I also wondered about the alternator, I may put an automatic system on it, but one thing to remember is this: Generic lead-acid batteries need to always be topped off. If you plan on really leaving the alternator off, you should consider replacing the battery with some type of “deep cycle”, so it won’t harm it leaving it low (potentially) for long periods. I know farmers wear theirs down and leave them down all the time (with their machinery) but they also have to replace the battery quite frequently.

Right now I have the working a/c model, and I am not really convinced I want to remove it… I don’t actually use it anyway, it runs the engine down so bad and I am sure it really eats up the mileage, I just don’t know which is worse — both windows down, or a/c on…