Which used Mercedes S-Class saloon should I buy?
Whichever luxury car you're after, the brief is the same: buy the ones with the smallest engines. Every model has decent performance and even the smallest version delivers nine-tenths of what you'd get if you bought the flagship version - but at a knockdown price.
The S320 CDI diesel is our first choice, followed by the smallest petrol, the S280. These were the best sellers, so there should be lots around.