BMW 6 Series vs BMW M240I

What's the difference?

What happens when you struggle to sell an odd-bod, not-quite-a-coupe, sort-of-a-hatchback, almost-an-SUV model? Well, sometimes it gets axed, and replaced with a new model that bears a new name.

That's pretty much it in a nutshell for the BMW 6 Series Gran Turismo, which was formerly the 5 Series GT. It essentially takes the place of the 6 Series Gran Coupe - an alternative to the regular 5 Series sedan that's more attainable than a 7 Series limousine.

Confused? It's not as difficult as all that sounds - you just need to know that this model, the 2018 BMW 6 Series Gran Turismo, is supposed to offer a neat alternative to the go-to family luxury car or SUV.

I spent some time in the entry-level 630i to see if it can deliver on that promise. In fact, I spent more than 24 hours driving the BMW 6 Series GT over the past week, and I don't have a sore back, I haven't been left scratching my head over the intended purpose, I haven't been uncomfortable, and I haven't been left wanting for much.

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.