Partly no updates because I really haven't been driving much. I went 6 months on one tank before my Feb fill-up this year.
That said, I've been driving it a bit more recently, and just got the best MPG so far, a titch over 70 MPG US / 3.2 L/100 km:
That's covering 830+ km / 516 miles. (Manual MPG calcs were very close to the display, too.)
I've been seeing some crazy good MPG lately. Eg. this was from a 70 km round trip a couple of days ago:
How??
1) Cruising at very moderate speeds on rural roads with speed limits from 70-80 km/h = ~42-50 mph.
2) Unusually HOT ambient temps - 32C = 90 F, with no temptation of MPG-killing AC in this poverty spec Mirage! And I use the block heater to pre-heat the engine year-round.
3) I haven't directly tested them against the stock Enasaves yet, but my butt dyno tells me that the new-to-me Bridgestone Potenza RE92's on the car roll noticeably better than the Dunlops.
(This winter, I scored this set of four barely used RE92s on Mirage rims for two hundred bucks! Same OEM size -- 165/65 R14 -- as the Mirage's stock Dunlop Enasaves.)
4) Almost no traffic, so I can coast F..O..R..E..V..E..R to stops & turns - hardly touch the brakes.
5) A bunch of ecomods.