The Lotus APX (standing for Aluminium Performance Crossover) also known as Proton MSX is a concept car created by the British sports car marque, powered by 3.0 litre supercharged V6 engine, designed and developed by Lotus

This vehicle is also a first for Lotus, as it is the first crossover SUV they have ever built. It was to have entered production as the Youngman Lotus T5, but was cancelled.