The Corolla has a well-earned reputation for reliability. Its existing 1.8L inline-4 variants and the new 2.0L engine are built to achieve the same holistic engineering philosophy for stability. These engines differ in the manner in which they deliver power and their reliability once they achieve 100K+. Its used engines are also reliable, if not abused, and maintained like anything else. https://carpartsstoreusa.com/toyota-corolla-dynamics-of-its-1-8l-i4-and-2-0l-i4-engines/