Audi S4 review

A bit like how Clark Kent uses his glasses to hide his true identity, Audi’s S models are ideal if you want superhero performance but don’t necessarily want everyone else to know about it. The Audi S4 is a great embodiment of that idea – it’s impressively quick while remaining almost invisible to the uninitiated onlooker.

The S4 is the middle step on Audi’s performance ladder, with the regular A4 below and the powerful RS 4 above. The latter is a close match to the Mercedes-AMG C63 and the BMW M3, whereas the S4 is traditionally a rival to the Mercedes-AMG C43 . And, like its rival, the S4 doesn’t pander to your taste for speed at the expense of your need for space; should you need added practicality, the S4 is available as either a saloon or estate (Avant in Audi-speak). Its Jaguar XE P300 and Alfa Romeo Giulia Veloce rivals, on the other hand, are saloon only.

In 2019 the S4 was given a visual refresh to keep its looks in line with other Audi models. This also included a new interior and infotainment system, but perhaps most significantly of all, a change from petrol to diesel power.

Yes, despite diesel not being everyone’s friend, for the first time in its history the S4 is diesel powered. And if you love a quick car but hate stopping for fuel every five minutes, the switch to a 3.0-litre bi-turbo V6 diesel might be music to your ears – official figures suggest it'll manage over 600 miles from a full tank.

So can the updated Audi S4 sway you away from the alternatives? Read on over to next few pages to find out.

 Once you’ve made your decision, don’t forget to see how much you could save by visiting our New Car Buying pages.