Just adding my wet belt issue to the list! Took out 4 Yr lease on Grandland X Sept 2021, on an "as new", zero mileage car 1st registered 6 months earlier.
It arrived dirty and within 5 months needed a new gearbox!!
Shortly after, some brittle plastic lattice under the bonnet had cracked, and the crack spread. It was attached to headlamp assembly, so needed new headlamp for the sake of some plastic! £700.
Vehicle 1st called in for service 2024 and again in 2025. The latter was months before car would be returned under lease. Was told the wet belt needed changing. No Mot without change. Had to pay bill of £1200 because I had apparently missed a service - despite not being called in prior to 2024. I naively assumed earlier service would have happened when they had vehicle back for the new gearbox.
It seems there is a common theme of playing games with servicing requirements in order to trip up customer and have them fund replacement of a known faulty part. I am awaiting response to complaint, but it is clear from the other posts that Vauxhall don't care. I am about to share my thoughts with What Car magazine - the motoring public should know about this.