Does Crosstar rust faster?

[Eros]

I was just wondering..
Could the extra plastic decoration on the Crosstar trap water over time and cause the body to rust faster?

[Bristol_Crosstar]

I was just wondering..
Could the extra plastic decoration on the Crosstar trap water over time and cause the body to rust faster?

I'm on my 3rd Jazz and never had a spot of rust on any of them. I'd have thought the plastic sills and wheel arch protectors are there to help protect against rust, can't see how they'd make things worse.

[Kremmen]

Civics have had plastic arches since 2006 and no rust problems on those.

Galvanised metal has put that old problem to bed.

[madasafish]

Civics have had plastic arches since 2006 and no rust problems on those.

Galvanised metal has put that old problem to bed.

I wish!
Our 2003 Toyota Yaris D4D was galvanised from new.
Made in Japan.

At the rear and  along the inner sills running from front to rear, the original paint/underseal has worn away exposing the galvanising. As the zinc is sacrificial, it started to wear away, showing rust developing under what zinc was left.
I have treated it all with Dinitrol to stop further corrosion.
(Porsche 911s were galvanised for c 1975 iirc and still corrode when the galvanising wears off)

[culzean]

Civics have had plastic arches since 2006 and no rust problems on those.

Galvanised metal has put that old problem to bed.

https://www.differencebetween.com/difference-between-zintec-and-galvanised/

Vehicle bodies have been made all over the world with electro Zinc coated steel ( Zintec) for a long time now, it is normally only used 'below the waist' - Zintec is different proper galvanising ( hot dip,  like Volvo / Saab  used to do up to bottom of door windows - or the 'waist' of a vehicle ) as the electro zinc  layer of zinc is uniform and paintable ( it can be hard to get paint to stick to hot-dip galv ) , and only about 50 microns thick, so needs protection by painting.  Subframes and Suspension parts are normally given quite a thick electrophoretic coating     https://www.surfaceprocessing.co.uk/classic-vehicle-solutions/electrophoretic-coating-system/

Plastic parts do not rust in themselves and are good to protect from stone damage,  but they can trap water ( a rust point on jazz is the gap where plastic bumper moulding meets the wheel-arch.