Exhausts get very hot and will rust from day one if made from mild steel. Saying that Mrs BJ's 2006 Panda has had a very rusty looking exhaust for years and years - it's still on the original though.

The suspension rust is just surface and normal. Many cars have galvanised bodies but suspension components are not and will rust - but last for decades as very thick. Myself I protect suspension components with Owatrol oil that is a great rust inhibitor and sets to a clear varnish like finish. It's held rusty FIat components very well indeed for many years / decades. PS don't treat the exhaust - too hot.

Basically - all normal.

Most 'ordinary' cars come new with mild steel exhausts. If they are driven mostly for short(ish) journeys their insides will not warm up fully, leaving condensation which causes gradual rust from inside. The outside will get wet from road water, doing likewise, especially in winters cold enough to make the local council salt the roads.

If the cost of replacing a blowing exhaust every few years worries you unduly, you could pay rather more when that becomes necessary and get a stainless one. Choice is yours.