Used test: Audi A8 vs Mercedes S-Class verdict

Our verdict

During this test, the five-star Mercedes S-Class has not let us down. It's as good a luxury car as it has ever been, with a strong yet smooth engine, better agility than the A8, and a superior infotainment system. It has better residual values, too. 

The A8 hasn't disappointed either. In fact, it has excelled, managing to feel even sturdier inside and quieter on the move than the S-Class. What's more, it has an even plusher ride and comes with more standard equipment from new. All those aspects are priorities in a luxury car, so we've crowned the Audi A8 our winner. 

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1st – Audi A8

For More comfortable ride; quieter on the move; higher-quality interior
Against Poor infotainment usability; slightly gruffer engine

What Car? rating 5 stars out of 5

Audi A8 review >> 

Find a used Audi for sale >>

2nd –Mercedes S-Class

For Sharper handling; better infotainment system
Against Mixed ride quality; interior quality not quite brilliant; not as well equipped

What Car? rating 5 stars out of 5

Mercedes S-Class review >>

Find a used Mercedes for sale >>

Specifications: Audi A8 50 TDI quattro L

Engine 3.0-litre diesel
Power 282bhp
Torque 443lb ft
0-60mph 5.9sec
Top speed 155mph
Fuel economy 40.4mpg (Official average)
CO2 emissions 152g/km

Specifications: Mercedes S-Class S350d L AMG Line

Engine 3.0-litre diesel
Power 282bhp
Torque 443lb ft
0-60mph 6.2sec
Top speed 155mph
Fuel economy 44.1mpg (Official average)
CO2 emissions 158g/km

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