Pioneered by SEAT's Brand Group partner, Audi, TDI stands for Turbocharged Diesel Injection engine. This type of high performance motor is characterised by economy, reduced emissions and increased, low-end power (torque). Available on the new SEAT Toledo's 2.0L diesel model, the general principle behind TDI is: a turbocharger delivers air to the engine and ensures the cylinder is filled to an optimum level. Then, in the last part of the compression stroke, very high-pressure diesel fuel is injected into the combustion chamber to create a highly combustible air/fuel mix. This reduces emissions, increased performance and, thanks to the engine encapsulation and hydraulic mounts, keeps noise down, ensures smooth running and low vibration.