Mercedes SLK55 AMG (2011) at the Frankfurt motor show

This is Merc's hot rod drop-top, the SLK55 AMG. It's the most powerful SLK of all time, because under that bonnet and behind that three-pointed star is a new 5.5-litre V8 producing 416bhp. So the badge finally corresponds to the engine size?

BMW Concept X4 (2013) first pictures of baby X6 coupe-SUV

This is the BMW Concept X4, which borrows the idea of an SUV with coupe proportions from its X6 brother, and shrinks the template down to the size of an X3. But don't be fooled by the 'Concept' tag of this car – like the Concept 4-series coupe we saw in 2012, the X4 is very much confirmed for production, and will receive only detail styling tweaks before it goes on sale in mid-2014. It'll be built alongside the X3, X5 and X6 models at BMW's Spartanburg factory in the USA from early 2014.

New Audi A1 Sportback: The Five-Door A1 arrives for 2012

Audi reveals the new A1 Sportback 5 Door With almost two years of sales of the ‘Only Premium Car in its Class’ (Audi’s assertion), Audi has revealed the more practical version of its smallest car – the five-door Audi A1 Sportback. Visually, the five-door A1 looks just the same as the three-door A1 – with the obvious addition of a pair of back doors – but Audi has managed to 6mm in height and width which, they say, improves room in the back. Which it may, but as the length and wheelbase remain the same it won’t do anything for legroom.