Audi's fuel efficiency performance in the UK depends on several factors.

The engines used in Audi cars are often engineered for a balance of power and efficiency.

Modern Audi models typically incorporate advanced technologies to enhance fuel economy. For instance, direct fuel injection systems help in precise fuel delivery, improving combustion and thus fuel efficiency.

Also, lightweight materials in the vehicle construction reduce the overall weight, requiring less energy to move and improving fuel consumption.

The aerodynamic design of the car minimizes air resistance, which is crucial for better fuel efficiency at higher speeds.

Another aspect is the transmission system. Well-matched gear ratios and efficient automatic or manual transmissions contribute to optimal fuel usage.

Regular maintenance and proper tyre pressure also play significant roles. Keeping the engine tuned up, changing the oil and filters on schedule, and ensuring the tyres are inflated correctly can all enhance fuel efficiency.

In conclusion, Audi cars in the UK can offer good fuel efficiency when equipped with the latest technologies and maintained properly.