Audi S4 vs BMW M240I

What's the difference?

Audi would probably prefer you not to realise this, but the five distinct versions of S4 and S5 on the market all pertain to a single performance and equipment formula spread across five different bodystyles. 

Yes five, and this has been the case for more than a decade, with the S4 sedan and Avant wagon, A5 two-door Coupe, convertible Cabriolet and five door liftback Sportback all representing vastly different shapes for you to choose from, with the same underpinnings. This simply echoes the A4 and A5 ranges they’re based on of course, and BMW clearly thought it was a good idea too, given the 3 and 4 Series ranges were split into individual lines at the start of last generation.

Mercedes-Benz offers a similar array, minus the liftback, but is happy to wrap the whole lot under the C-Class label. 

So, given that the A4 and A5 range scored a mid-life update a few months ago, it’s only logical that the changes flow on to the performance S4 and S5s, with the top-tier RS4 Avant following suit. 

We’ve covered the latter in October, and now it’s the turn for the former, and CarsGuide was among the first to drive the updated S4 and S5 ranges at their Australian media launch last week.

If there ever was a modern BMW that captured the essence of the classic 1602-2002 and pre-Bangle-era 3 Series, it's the 2 Series coupe.

From the lowly 118d diesel to the sublime M2, this model line is the reincarnation of everything that the old 'The Ultimate Driving Machine' company tagline stood for.

Now there's a third-generation 2 Series (if you also count the crisp E82 1 Series of 2007), and right now the M240i is giving off the sort of exciting vibes you might have felt as a teenager looking at a bedroom poster of a 2002ti or 323i.

Does the G42 2 Series deserve to sit alongside such esteemed ancestry? Let's take a deep dive into this most intriguing of BMWs to find out.