One of the reasons for trading my fortwo in for the Mirage was the start of timing chain rattle....like alex16 says it will give lots of warning before failure....unlike belts, 2 cars I've owned in the past, (chevette & escort) have had belts snap with no warning, stranding me. The chevette was a "non interference" engine so was a less expensive repair than the escort which bent valves and needed a new cylinder head.....
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View my fuel log 2015 Mirage ES Plus 1.2 automatic: 37.9 mpg (US) ... 16.1 km/L ... 6.2 L/100 km ... 45.6 mpg (Imp)