Does the 2007 Mazda 3 1.6 petrol use a timing chain or cam belt?

Does a 1.6 petrol 2007 Mazda 3 have a timing chain or cam belt?

Does the Fiat 500 Twin Air use a belt or chain?

I have a 2015 Fiat 500 Twin Air which has done 33,000 miles. Should I be considering having the cam belt changed?

Why are there no chaim cam spares for my 2011 Skoda Fabia Elegance 1.2?

I'm buying a 2011 Skoda Fabia Elegance 1.2 TSI from a Skoda dealer. The vehicle requires a new cam belt but there are no spares available in the UK. Does this bode ill for the availability of future spares?

What are the most common faults on the BMW 3 Series?

What are the most common faults on a used 2010 BMW 3 Series 320d? I am thinking of buying one and would value your opinion on this model.