BMW 535i vs BMW 740i

What's the difference?

Eco-friendly vehicles are the leather pants of the new-car world; it takes a lot of money to make them look good (but people who own them think they look fantastic regardless). If you don't have a gazillion dollars to drop on a Tesla,  then it's a one-way ticket to Prius town. And really, who wants that? 

But what if it didn't have to be that way? Behold the BMW 530e iPerformance.

Seemingly tired of waiting for the Australian Government to introduce any sort of meaningful subsidy for green cars, BMW has made the choice simple: you can have a petrol-powered 530i for $108,900, or opt for the plug-in hybrid 530e for... $108,900. This is truly revelatory thinking.

There's no specification penalty, either, and the hybrid will power to 100km/h in an identical 6.2 seconds, so you're not even any slower. But you are sipping less fuel, emitting less C02 and basking in the general smugness, and sweet silence, that comes with feeling like you're saving the world.

So what's the catch?

The BMW 7 Series is Munich’s flagship, the car that fans of the blue and white roundel respect as peak plush motoring.

Now, for the seventh 7 Series, BMW has brought electric power to the table in the form of the i7 in order to stay ahead of the curve.

It’s still joined by a petrol-powered variant here in Australia, the 740i, which is a mild hybrid and shares a lot of the luxury specifications of the i7 - including a properly impressive rear seat theatre screen.

But is it forward-thinking enough to fend off the likes of the Mercedes EQS?