If you like your current Yaris then I wouldn't be in too much of a rush to change it - the Yaris has an excellent reliability record and it'll have lots of life left in it yet. That said, the newer Toyota Yaris Hybrid (launched in 2020) is an excellent car and will feel like a step up in terms of interior quality. You could also look at the Yaris Cross, which is a small SUV with a slightly higher driving position than the Yaris. We rate the bigger Toyota Corolla hatchback, too.