In fact the reason I bought the Mirage was because of the engine.
I bought a diesel powered Smart Fortwo in 2008 because the FE of my pickup in the city was terrible and the Smart was the only vehicle that would fit in my garage with my boat, ( other than a motorcycle).
I was fascinated by the little engine and fooled around with it a bit, deleting the egr among other things.
But a couple of things about it irritated me and after 6 years traded it in on the Mirage.
I knew the basic architecture of the Smart engine and looked for a car with the same engine.....voila, the Mirage.
The selling point for me was/is the timing chain. I never did like timing belts, the worst one I owned was a Ford Escort that powered the water pump with it's timing belt.When the pump kakked it would strip the teeth on the belt and that engine was an interference type....
This engine doesn't seem to have many faults,thankfully.
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View my fuel log 2015 Mirage ES Plus 1.2 automatic: 38.0 mpg (US) ... 16.2 km/L ... 6.2 L/100 km ... 45.6 mpg (Imp)