I'm posting this in part to ensure everyone else in the UK is aware of this, and partly out of curiosity if this is offered elsewhere in the world. I bought my Prius Gen 4 new in 2016 on release. Mine is the highest specification Excel trim. At the time of purchase it came with a free 5 year warranty, which was standard for Toyota in the UK at the time. However, getting it serviced this week as it reaches 5 years old, I asked about extending the warranty. I was told this was now automatic, through Toyota Relax (Toyota Relax | Toyota Warranty | Toyota UK). This automatically extends the warranty up to 10 years, for free. You have to get the car serviced at Toyota (but I'd do that anyway, to be honest). This seems like an excellent deal to me. Is this comparable elsewhere?