Jimmy Newby

Greetings all.
having read your comments, I was inspired to join the group. I recently acquired a 2004 Jimny and have found myself in a bit of a pickle. I bought the Jimny because I wanted a affordable economical SUV. Little did I know that modified Jimmy's are not economical. It has on 3" lift springs and 235x75x15 tyres which equates to 20 miles per US gallon, is this normal? Is there a fix?
I eagerly await your response,- fitzcollins

Probably about right tbh.... mpg is easy to look up. There must be a 1000's roadtest, reviews and stat sites across the internet.

Big tyres (I assume the are MT/AT) and lifts won't do anything to improve mpg.

US gallons are also small, 3.78 litres vs 4.546 for an Imperial gallon. So it won't go as far on a US gallon.

Driving style and roads will impact mpg. Also the bigger tyres might be giving you a speedo error, so the mpg might be slightly better if you can check the trip vs known distances.

20mpg US gallons = 24mpg Imp Gallons.

Maybe a tad low.... but depends on the above really. I'd have though 28mpg Imp should be quite feasible.

I would be happy with 24 mpg but I am guided by other posts where 30-36 seems more the norm. I do conceed to spedo error and less gas (US gal)

I get about that from my standard automatic Jimny with the big trailer on the back and about 34 on a solo run. With your tyres and lift and probably other mods too that sounds about right at 24.

Also when was it last serviced as new fluids can make a big difference.

Is there a fix?

Yes, it you put it back to standard as Suzuki sold it. I would start with standard sized road biased all terrain tyres and then see what else the previous owner has done.
Suzuki development gave us the best compromise between Mpg / comfort / road holding, so any deviations are going to migrate the vehicle towards that modifications end goal. As a result something else will suffer, usually mpg.

Having said all that you will only be in the 32-36 mpg (UK gallon) average fuel economy range with 100% standard.