BMW 540i vs BMW M2

What's the difference?

Not all superheroes wear capes, and we're proud to report the 530e does its bit for green motoring without feeling the need to shout about it. And with no price or specification penalty, it's easier being green than ever before, and the pricing of this BMW really puts the cat amongst the canaries.

Proving good things still come in small packages, the pint-sized M2 remains my pick of the BMW M range. It's not the perfect daily drive, but I reckon the fun outweighs the foibles.

Crucially, there's nothing weird about the way the 530e looks. While some green cars look like they've been designed by one of the kids from 3rd Rock from the Sun, the 530e looks much the same as the rest of the range, save a few tiny but telltale giveaways - like the e-drive badging outside, and what looks like a bonus fuel flap tucked in behind a front wheel that houses the whole plug-in bit.

And we really, really like it. It's elegant and statesman-like from every angle, and looked especially important in the deep-blue colour of our test vehicle. It's not over-designed, with body creases used sparingly, and the occasional glint of polished silver that rings the windows and the grille adds a final sense of shininess to an understated design. 

Inside, there's more going on than you might normally find in a BMW. The hugely complicated digital display screen now includes everything from battery charge, power usage to the usual assortment of speedometers and petrol readouts. 

It doesn't feel overdone or crazily festooned, but there's more at play here than in your usual BMW.

The dash is busy, too, with a wide screen emerging from a centre stack that also houses a CD player and a digital aircon setup, which in turn sits above a complex centre console from which you can alter driving settings, control the multimedia or cycle through electric modes. It doesn't feel overdone or crazily festooned, but there's more at play here than in your usual BMW.

Elsewhere inside, the seats are beautifully designed, with a quilted leather highlight through the middle, while the gloss-black strip that lines the dash hides a dual strip of ambient interior lights that also runs across all four doors.

There have been mixed reviews of the design of the BMW M range, but I reckon this one looks pretty damn good. In fact, I've always thought this kind of hyper-aggressive styling looks better on smaller cars than it does on big ones.

And it certainly is aggressive, right? From the huge bonnet bulges to the meshed out grille and angry rear diffuser, to the staggered alloys and flared wheel arches, to the blocky rear end with its four massive exhaust exits.

But my favourite exterior item has to be the blacked-out carbon roof, which helps shrink the M2 visually, and makes the whole car look more potent.

Inside, it's plenty sporty feeling, with hard-backed sports seats, lashings of carbon-fibre-look trimmings and the bright red M buttons on the steering wheel.

It's nice, but some of the touch points – like the hard plastics on top of the doors, where, if you're like me, you rest your elbow when driving – feel less than premium.

Still, all the tech is present and accounted for, with its digital dash and huge centre screen, and there's no shortage of spaces to connect or charge your phone.

As the world's motoring tastes shrink faster than a lap-banded Clive Palmer, it's easy to forget the joys of the full-size sedan, but the space for passengers and luggage in the 5 Series will have you questioning your downsizing ways.

Upfront, there's plenty of room between front-seat riders, who will also share two smallish cup holders, along with room in each front door for bottles. There's also a dedicated wireless charge pad (which, because of its tight design, is crazy difficult to actually remove your phone from), but you'll also get two USB points and a power outlet that's hidden in the sizeable centre storage bin as standard fit.

Backseat riders get heaps of space, both in width and in leg room behind the front seats. And there's twin air-con temp controls and twin power outlets, too. But middle-seat passengers will be forced to sit with their legs on either side of the raised tunnel, which will definitely impact on comfort.

The boot's still sizeable, despite shrinking slightly to house the battery/fuel tank setup

Best to ditch the fifth passenger, then, and deploy the pull-down seat divider, which also houses two cup holders. Finally, there are three ISOFIX attachment points, one for each seat in the back.

The boot's still sizeable, despite shrinking slightly to house the battery/fuel tank setup (the tank has been moved further back to accomodate the batteries), and can be adjusted to be a flat load area if you'd like, offering up to 410 litres with the rear seats in place.

The M2 pocket rocket measures just over 4.5m in length, just under 1.9m in width, and just over 1.4m in height, and it rides on a 2747mm wheelbase. That makes it longer, wider and lower than the model it replaces.

Remember that 'lower' bit, as it will come up again in a moment.

Up front, you don't feel cramped, and there's the requisite cupholders, door pockets and hiding holes, as well as wireless device charging and USB connections.

But remember, this is a two-door, four-seat affair, which cuts into the practicality a little, or a lot.

Swing open the wide front doors, and push the front seat-back forwards, and the entire chair will slide forward automatically.

It does help create more room to climb into the back, but it's still a slightly embarrassing challenge to make getting back there look anything like graceful.

Once there, it's tight. I'm 175cm and my head was firmly pressed into the roof.

You do get your own vents and temp controls, but that's about it. Even the pull-down divider only gives you access to the 390-litre boot, rather than extra cupholders.

You do get two sets of ISOFIX attachment points, though, and let's be honest –  if you're buying this to make Bunnings runs, you've probably got it wrong.

First, the bad news. The M2 has only been getting more and more expensive over the years, and this new-generation model continues that charge.

Fun fact: When we first tested this model way back in 2016, you could get the Pure grade for less than $90K with a manual transmission.

Or you could spend just under $100K for the full-fruit version. This one, though, lists at $121,700, before on-road costs.

So, a little less bang for buck, but there's still a whole lot of bang on offer here.

You'll find staggered 19- and 20-inch lightweight alloys, while standard performance kit includes an 'Active M Differential', 'Adaptive M Suspension', 'M Compound Brakes' (with blue calipers), 'M Sport Seats' up front and, for the first time, a lightweight 'M Carbon' roof.

Elsewhere, there's adaptive LED headlights, a 12.3-inch instrument display and a 14.9-inch multimedia screen, a head-up display, a Harman Kardon 'Surround Sound' audio system and Android Auto and Apple CarPlay connectivity.

You'll sit on leather seats that adjust electrically and are heated up front. There's three-zone climate control, along with a heated steering wheel, wireless device charging and ambient interior lighting.

Drift around in pure EV mode and you'll be relying on the 530e's 83kW and 250Nm electric motor, which will provide what BMW refers to as "between 28 and 32 real-world kilometres".

Run out of range, or simply use too much throttle, and the 2.0-litre petrol engine comes into play, adding 135kW and 320Nm to the mix. All up, that's 185kW and 420Nm - respectable numbers by any measure, and enough to match the petrol-powered 530i's zero to 100km/h sprint of 6.2 seconds.

That power is fed through an eight-speed automatic transmission before being sent exclusively to the rear wheels, where it belongs.

Besides, this is what we're really here for, isn't it? The M2 gets the 'M TwinPower' 3.0-litre twin-turbo inline-six engine, producing a sizeable 338kW and 550Nm, sending that power to the rear wheels via an eight-speed auto or six-speed manual.

BMW says this engine is very, very close to the engine that powers the M3 and M4, and says it will rocket the M2 from 0-100km/h in 4.1 seconds, and to 200km/h in either 13.5 seconds in the automatic, or 14.3 seconds in the manual.

Like a Facebook relationship status, it's complicated. The 530e will sip a claimed combined 2.3 litres per hundred kilometres on the claimed/combined cycle, which is amazing for a car this size. Better still, it seems genuinely achievable - at the vehicle's launch, our own Richard Berry recorded a stunning 2.0 litres per hundred kilometres on a short test route.

But that's with a full load of battery charge on board. For our week with the 530e we were unable to actually plug it in (living in Sydney, I can't afford a garage), so once the initial battery charge had been used we were back to mostly petrol power. Unlike some other plug-in hybrids we've driven, we found it very difficult to recharge the battery to any meaningful level using regenerative braking, so once we were flat we stayed flat. If we had plugged it in, it would have been a two-hour recharge using a specialised wall unit, or about four hours using a normal plug.

As a result, though, our fuel use was closer to 7.0 litres per hundred kilometres after some considerable real-world testing.

A small fly in the ointment is fuel use, with the M2 said to use 9.7L/100km on the combined cycle. It also drinks 98 RON premium, and is home to a 52-litre fuel tank. Your theoretical driving range is around 540km.

Now, be warned, you'll be bored stiff if you drive it in the way that's required to get it that low. When we were being gentle, we were somewhere between 10.5 and 11.5 litres per hundred kilometres.

Emissions are pegged a 220g/km of C02.

There's so much to like about the way the 530e sets about saving the world, and that's mostly because it doesn't shout about it, either to the driver or the outside world.

It's very much an underpants inside its pants superhero, which makes us like it even more. Set off in EV mode, and the 530e will drift silently away from the curb, burning battery power over fuel for as many as 30(ish) kilometres. But equally important, the shift from green to gas is largely imperceptible, with the petrol engine joining in willingly when you ask it to - usual via a prod of your right foot.

It is so effortlessly smooth that you need to really pay attention to notice the eight-speed 'box changing gears at city speeds, and it's commendably quiet, whichever drive mode you're in.

Downsides? Well, it doesn't feel quite as sharp as it's conventional-engined siblings. The batteries add around 230kg in weight, which never helps, and it all feels a little softer and a little less dynamic, even with Sport mode engaged. BMW assures us the adaptive suspension setup and tune is identical, but the 530e feels noticeably softer when you tackle a twisting back road. And that encourages you to use your right foot a little more, which in turn negates the whole electric thing in the first place.

One of the great joys of BMWs has always been their ability to transform from cosseting comfort to rear-drive rocket when you want them to, and you can't help but notice the 530e isn't quite up to that challenge. But if your intentions are mostly city- and freeway-based, then this plug-in BMW is almost indiscernible from its petrol-powered sibling.

Let's be totally up front here: the BMW M2 isn't the most comfortable vehicle to live with. In fact, I recently climbed out of the M3 Touring, and found that to be more comfortable on broken city streets.

The M2 is fitted with adaptive suspension, but even in its most comfortable settings it can feel rough, bumpy and jarring on bad roads (of which Australia has lots), and unless you're gentle with the accelerator, it can feel a little jumpy when first taking off – a by-product of its prodigious power.

Now, let's be totally up front again: I don't care. The M2 is fun, plain and simple, and for mine, the above is a fair price to pay for something that brings so much joy.

The steering is lovely, the power immediate and the soundtrack intoxicating, and it's the kind of car that's fun no matter where, how far or how fast you drive it.

In fact, fun seems to be the very centre of the M2 proposition, which definitely doesn't take itself too seriously.

For evidence, look no further than the 'M Drift Analyser', buried in a hopelessly busy multimedia system that will have you praising the CarPlay and Android Auto gods.

It will rate your best drift out of four stars, measure it for distance, and basically give you a pat on the back for doing your best hooligan impression (not on a public road, of course).

Fun, then, is the order of the day here. And I bloody love it.

The BMW M2 hasn't been assessed by ANCAP, but it arrives with six airbags, as well as all your usual traction and braking aids.

Elsewhere, you'll find lane change and lane departure warning, active cruise control, front and rear parking sensors, tyre pressure monitoring, and AEB with pedestrian detection.

There's also blind-spot monitoring, rear cross-traffic alert and lane centring assist, as well as a tyre-pressure monitoring system.

Like the rest of the 5 Series range, the 530e falls under BMW's three-year, unlimited-kilometre warranty. There are no set service intervals, either, with BMW using what it calls 'condition-based' servicing. In other words, the car will tell you when it requires a trip to the service centre.

The batteries are covered by a separate warranty covering six years or 100,000km.

The BMW M2 is covered by a five-year, unlimited kilometre warranty, and servicing is 'condition based', in that the vehicle will tell you what maintenance is required, and when.

You can prepay your service costs at the time of purchase for all BMW vehicles, covering the first five years of ownership, for $3480 (which means $695 per service).