We have a few chevy's with the cylinder deactivating cylinders. It started ticking pretty loud on the highway a few years back if you held the speed over 70mph. They wanted me to replace the lifters and camshaft but the truck had well over 350,000kms on it. I changed to mobil one and told the drivers to slow down. It's now quiet and still runs strong at 550,000kms. I'd still avoid them though.
Simpler is more gooder. I prefer the manual temp controls and didn't want the auto setup, I'm not worried about them breaking but they're just a pita to use. I'd rather turn a dial without having to stare at the thing for a few seconds to see what I'm doing or have to scan through options to get the setting I want. Stupid auto temp controls....
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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)