BMW 530E vs Mercedes-Benz CLA250

What's the difference?

Anyone unfortunate enough to hear me banging on about electric cars - or perhaps more accurately, electrified cars - will be aware of my undying love for the existence of plug-in hybrid electric vehicles (PHEVs). 

I love them because they offer a drama-free step into electrification. You don't need a big box on the wall to make sure you're charged overnight and because there's a petrol engine under the bonnet, as long as you've got fuel in the tank, your range anxiety disappears.

You can get around town in electrified silence and emissions-free smugness while still planning that around-Australia trip you'll never go on. It's absolutely the best of both worlds for those reluctant to take the next step. A genuine win-win, if you like.

Except that very few people buy them. Their existence in the catalogues of a number of car companies feels like a weary, "We should at least do something" from product planners. BMW has been trying with PHEVs for a while, with selected offerings in the 3, 5 and X5 range. Given the 5 Series has had its mid-life facelift, what BMW calls the LCI, it's time for another look.

If you're after a hot hatch with a boot, you can't have one because it wouldn't be a hatch anymore.

What you can have is this little beast - the new, second-generation Mercedes-AMG CLA 45 S, a small coupe-style sedan sharing its high-performance DNA with the hot as bubbling lava A 45 S hatch.

Packing 300kW – that's just over 420hp – and 500Nm its 2.0-litre engine is claimed to be the most powerful series production turbo four ever made.

And Australian deliveries are scheduled for early 2020, with a likely price tag in the mid-$90k bracket.

Mercedes-AMG invited us to the car's global launch in Madrid, Spain, where we got behind the wheel on road and track.