2019 Superb mk3 2.0 diesel. In March 2025 a steady orange engine light appeared appeared on the dash, and the car went permanently into limp mode. I contacted Caffyns Skoda Dealer in Tunbridge Wells on Monday 16 March 2025 for advice. Was the car safe to drive for us? For other road users? For the car? I was told I could bring the car into them for checking on the 29th. But not March. April!! I was not impressed with this lack of service. I instead arranged to take it to a local garage near Matfield in East Sussex on Wednesday 18 March 2025. In just a few minutes the mechanic there read the electronic diagnostics and advised it was a problem with the Adblue sensor no longer working. He later phoned me and said that as the sensor is inside the sealed adblue tank it requires a complete replacement of the tank in order to fit a new sensor! I was not happy about this news as costs around £600 to fit/replace. For the moment I have had the adblue system 'mapped-out' (cost £300) so the car no longer looks for a working adblue sensor and all is driving quite normally. The cost of car assemblies at times seems unreasonable. Thermostat valve replacement on the cooling system requires a complete new water pump (see posting elsewhere). Adblue sensor requires a complete new tank. A bulb goes in a headlamp and suddenly you have to buy a complete headlamp assembly costing hundreds, rather then a £15 bulb. As I am a private buyer I think manufacturers should be more careful about making vehicles financially sustainable in the long-term.

They do make cars financially sustainable, but for them not us

From the manufacturers point of view they have the option of selling a replacement sensor for £ with little profit, or a complete assembly costing ££££ with lots of profit.

Manufacturers are a business and they need to make a profit to survive/invest so it's the ££££ we have to put up with.

best to buy 12 - 15 year old cars honda and toyota are best, easy and cheap to fix if they ever go wrong , prices are up though because people are waking up https://www.youtube.com/watch?v=-RTkroVirt0