Audi A8 review - MPG, CO2 and running costs
Hybrid systems deliver respectable economy, but depreciation remains a big problem for the A8
The 48-volt mild hybrid system in the Audi A8 helps to deliver respectable fuel economy figures (under tougher WLTP testing), with the 50 TDI delivering 40.9mpg when using the standard-fit 18-inch alloy wheels. But, opt for the 21-inch rims that come with the Vorsprung trim and economy drops to 38.2mpg.
In the 55 TFSI model, you can expect up to 29.4mpg on a combined cycle, which again drops to 28.2mpg in top Vorsprung trim. The choice of equipment level also has an impact on CO2 emissions, with 50 TDI emitting between 181-197g/km of CO2. The figures are 217g/km to 232g/km for the 55 TFSI.
The 60 TFSI e plug-in hybrid is the greenest choice by far. The petrol/electric model has a claimed maximum economy of 113mpg, with emissions of between 58g/km and 65g/km of CO2.
As with all cars as expensive and swift as the A8, insurance is pricey. The 55 TFSI and 50 TDI start from group 44 out of 50, while the 60 TFSI e will attract a more expensive premium being in group 48 for the standard car and group 49 for the long-wheelbase version. The top-of-the-range S8 predictably sits in group 50.
As with all limousines, the Audi A8 loses a hefty chunk of cash to depreciation. Our experts predict that the range will retain an average of 37% of its value after three years and 36,000 miles, with the A8 L losing a touch more than the standard wheelbase car. The best performer in terms of retaining value is the 60 TFSI e model which is able to hold on to 47% of its original list price.
In this review
- 1Audi A8 reviewThe Audi A8 features impressive tech and a luxurious interior, but can’t match the Mercedes S-Class for comfort
- 2Engines, performance and driveAudi has introduced a plug-in hybrid model to the A8 range, but ride quality niggles remain
- 3MPG, CO2 and Running Costs - currently readingHybrid systems deliver respectable economy, but depreciation remains a big problem for the A8
- 4Interior, design and technologyUnderstated styling hides a first-rate, minimalist cabin, with a generous level of standard equipment
- 5Practicality, comfort and boot spaceHigh levels of comfort and space, especially in the rear, but the S-Class still edges it for ultimate luxury
- 6Reliability and SafetyThe A8 has reassuring levels of safety kit, but Audi’s dealers don’t enjoy the best reputation