You could always do what I did and replace the engine and transmission with ones from a low mileage(under 6000km) 2017. I went from 8.5l/100km last Feb to 5.9l/100km this month. I also changed the air filter and stopped idling for 30 mins most days.
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View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)
my best guess would be a slow loss of compression in the engine and the cvt fluid going bad, remember as the paper cvt filter begins to clog up, it takes more fuel/force/effort to push cvt fluid through that filter. Ive got a youtube video linked below that teaches you how to change the cvt fluid and both filters.
The other obvious causes talked about on the form are tire ages, tire sizes, sticking brakes due to rust. And broken fuel injectors causing fuel to spray unevenly. Alot of people on the form recommend Techron https://mirageforum.com/forum/showth...ll=1#post92647
please consider checking out my Mirage related youtube channel: https://www.youtube.com/channel/UC6c...IEViRFw/videos
klroger (03-01-2022)
inuvik (02-28-2022)
I forgot to mention that my economy went to 5.7-5.9 from March to June. Weather makes the biggest change my fuel economy. I don’t know how you used to average 53mpg in a cvt, I saw some of you Fuelly log from 2018, that looks more realistic but still really good.
For those that don’t know, he’s got a 2014 cvt Mirage and is somewhere in Ontario and who knows how many miles are on it. Same goes for the weather for the last 4 tanks(800kms?)…..
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View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)
The first two years I had the car were mind bogglingly good. I bought it with 28000 km so it was more or less new. I drive mostly highway, and I drive with fuel economy in mind. No hard breaking, LRR tires (on the front) in the summer, minimal AC in the summer, minimal heat in the winter, acceleration downhill when possible, etc. I forgot I even had fuelly, but I started tracking when the decrease in economy was becoming apparent. I just looked and yeah, I remember that the average I had there would have been almost 0.5 L/100 km higher than it was the year before.
The car is admittedly middle aged at 208000 km. Car started with a half tank of old gas which I was expecting bad economy out of but I've done 3 fill ups since. It appears to be marginally better? I assume that's because it warmed up, but I'm still in the mid 7s, which is much higher than usual still.
Fummins (03-01-2022)
Whoever brought up the brake dragging, I'm still on board with that. Just a mild bit of brake dragging. Not brake smoking dragging ... just a little. But it adds up. One time I went bicycle riding with a group of friends on a borrowed bike. I noticed before we took off that the one I was using had just a tiny bit of rear brake drag. But it was hella minor. So I rode with them. I trailed the whole time. I struggled and huffed and puffed the whole time.
I switched bike with my brother and his bike felt like it would coast going uphill! And it was then we realized just how much energy those slightly dragging brakes were wasting.
Anywho - I might be sending you off on the wrong track, but it's worth a check.
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View my fuel log 2020 Mirage ES 1.2 manual: 42.4 mpg (US) ... 18.0 km/L ... 5.5 L/100 km ... 50.9 mpg (Imp)
klroger (03-01-2022),Spadesheart (03-01-2022)