Stick the end of the hose up over the wheel liners without nozzle so it will fit, you will wash out a lot of road dirt.

Click image to enlarge

Delboy wrote:

“Freelancers don’t rust”. That’s just wishful thinking. I bought my 2009 HSE last September from a JLR main dealer.
I trusted their prep work, but when I checked it at home during its inaugural clean I was shocked to see massive amounts of severe surface corrosion along both sills and in all four wheel arches, especially in the turrets.
It took me eight days to strip back, Jenolite and waxoyl the affected areas. Not impressed.

Sandes - Norway?

By the sea possibly?

We live 30 miles inland, so not much sea air, and I wrote it as mine was. slight surface rust on the front and rear subframes, considering mine was a 2008 vehicle and I got rid in 2017, at that rate she would have needed another 20 years before structural damage would have been a concern. Granted in the UK the local authorities like to spread salt on the roads as soon as it gets cold, but nothing like the damage the sea air can do - family lived in Southport - English seaside town.

Maybe the G4 has extra layers of paint that help? - it was originally black before special vehicles painted her orange. Tangiers Orange - gone, missing her
Replaced by Ewok what a mistake - now a happy Disco Sport owner

I think road salt and shifting climate around 0 degrees in the winter time has contributed a lot to this