The latest Warrantywise Reliability Index exposes the dependable heroes, the financial nightmares, and the uncomfortable truth about modern luxury cars
There’s a dirty little secret lurking beneath the glossy brochures, ambient lighting, massage seats and giant touchscreens of many modern luxury cars. Once the warranty expires, some of them transform from premium dream machines into financial hand grenades with the pin already halfway out. And now we’ve got the data to prove it. The newly released 2026 Warrantywise Reliability Index has analysed a staggering 1.6 million UK repair data points gathered between 2023 and 2026 from vehicles aged three to 15 years old on extended warranty plans across Britain.
