Under normal usage, a tune-up is not required until approximately 100,000 miles5 (only routine inspections and fluid changes are required up to this point). Credit for this longevity goes to long-wearing double-tipped spark plugs, a long-life timing chain, and careful engineering of the precisely manufactured SOHC valvetrain – which reliably maintains proper valve tappet clearances until the first tune-up.
I prefer a chain any day. Usually lasts the life of the car as long as they use metal and not plastic gears. A belt is expensive to have replaced or an all day project to DIY. Glad they went back to a chain so I don't have to think about it at 60,000 miles.Any particular reason you prefer a belt? I've had both and the peace of mind of a chain is much preferred, IMHO. I'm curious as to why you prefer a belt.
"Interference" ... the valves are open while the piston's simultaneously at TDC ... such that the two desire to occupy the same space at the same time ...So I gather that the 1.8 engine is still an interference engine and that the switch to a metal timing chain reduces the risk of belt breakage versus a rubber timing belt?
I'm glad to know that the 1.8 has a timing chain as a timing belt breakage while driving is catastrophic (costly) for interference engines.