You might see VTI-tech listed in the description of the 1.5-litre petrol engine. It references the movement of the valves in the engine, but what’s more important to know is that it’s a non-turbocharged engine, helping keep costs down. Many modern engines are turbocharged for improved performance and fuel efficiency, so this ‘naturally aspirated’ 1.5-litre engine might require a lot of revs to ascend steep hills or overtake slower traffic. This engine is fitted to the MG3 and MG ZS, and is mated to a five-speed manual gearbox.