BMW 520i vs BMW 530i

What's the difference?

More than half a century of 5 Series pedigree has led BMW to this, the first electric version of its venerable sedan, the i5. 

It's true that electric cars come with benefits that suit the realm of luxury (or at least executive) motoring like their effortless acceleration and near-silent operation, so this new G60 5 Series has the potential to be the best yet in its ‘i5’ form.

But there are rivals, well-liked ones at that, which BMW must contend with to snatch the spot at the top of the large premium sedan ladder technically held currently by the Porsche Taycan in terms of sales - though Mercedes’ E-Class would lead if its electric cousin EQE’s sales were combined.

So, with names like that to go up against, BMW better have brought its A-game.

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?