How long does machine polishing last?

It will last until the paintwork gets scratched and oxidized. This will depend on how much punishment you put your car through and what level of protection you have on it.

A few years ago, we polished a car for a customer, who then, a few days later, took it to one of those hand car washes on a forecourt where you pay in cash. They washed it down with a dirty brush and put scratches all over every panel. Because the car had been particularly shiny, this damage stood out particularly badly, which brought him rushing back to us.

Luckily, old Jaguars have quite good paint, and we were able to rectify the damage, and Jim never went back to that hand car wash again. Instead, he takes his cars to the Meadows, where they do a great job.