Why do some cars rust and others don’t? I realise that every car will probably develop rust at some stage but excluding environmental factor, why does it happen to some more quickly that others?
Cheaper materials?
Improperly treated materials?
Cheap paint used?
In: 1
You’ve sort of answered your own question.
Yes the type of steel used, and the paint used will affect rusting. As will environmental factors.
Cars driven in in warm wet climates ( especially by the sea( will rust more quickly than the same car driven I cooler dryer climates.
This can be demonstrated by the nail experiment many children do un school.
Lots of factors environment, how well the car is maintained, materials used. A car will do better in a place like Southern California than say Toronto. One thing that can really cause a car to rust is if you live somewhere that puts salt on the roads for snow/ice during the winter.
Paint is the coat with less impact on rusting. The metal goes through a lot of processes to prevent rust like electrophoresis beneath enamel and clearcoat and a wax coat on the underbody. Cheaping out on these processes will be visible on the long run. It’s common to use salt on the roads to melt the ice in northern europe, all german cars get those processes right.
Other thing to consider: some car bodies are made of aluminum, plastic, or other materials that won’t rust at all.
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