BMW Alpina B4 vs Hyundai Inster

What's the difference?

You could almost call the B4 S the anti-M4. It's still fast and practical but from a completely different perspective. It's much more a grand tourer than the M4 and even with the Akrapovic exhaust (usually a byword for joyous, anti-social racket), subtle.

For some, the price won't matter because the Alpina delivers what they want - M4-like straight line performance without the histrionics or the uncompromising chassis. And there's also a bit of that perverse exclusivity of the styling that you won't get anywhere else.

The target market for the Inster isn't huge, and Hyundai knows it won't be a runaway best-seller for the brand. But those in the market for a bite-sized EV will find the Inster feels bigger, and drives better, than they might expect.

Alpina has always had a particular aesthetic that could uncharitably be termed as mid-'80s West German - all set square angles and body graphics. Think David Hasselhoff's Berlin Wall look. The company has never really deviated from adding squared-off body bits to the various BMWs it has rebadged under its long-running agreement.

For the B4S, Alpina adds the signature billion-spoke alloy wheels (only a slight exaggeration), a new front splitter complete with Alpina lettering, a weirdly proportioned boot lid lip spoiler and - not even joking - pinstripes. Like I said, mid-'80s West German. You can still recognise the sleek 4 Series Coupe but perhaps the worst of it is the super-sized, wonky-looking ALPINA B4S on the boot.

Inside is rather more restrained apart from the ill-fitting Alpina plaque under the climate control. Again, it's all 4 Series in here, with the lovely Merino leather liberally applied across the cabin. Less lovely is the wood on the door pulls and console but the door cards have an oddly appealing woven leather which looks and feels good.

Sadly the standard 4 Series steering wheel is along for the ride. There's nothing wrong with it - although the Alpina logo does look out of place - but if I were a product planner, I'd beg for the lovelier M wheel.

The words small but perfectly formed appear here, with Hyundai’s insistence on not having a traditional range-wide design identity allowing them the freedom to create something unique and pretty funky here — though I do see some shades of Suzuki Ignis in the side profile.

It does look fun though, right? With the selfie ring-light-style headlights, Tetris-style rear lights, those swollen guards and the funky alloys.

And you can dial up further with the Cross variant, which gets a tougher, more squared-off look front and back - even if you’re more chance of meeting a bunyip than an Inster on your favourite off-road track.

Inside, the cuteness continues, though some of the scratchy cabin materials definitely point to the entry-level nature of the Inster.

Still, the seat materials, both the cloth and the leather, are lovely and thoughtfully coloured, and the twin screen setup is nice, too. I love the inclusion of a host of physical buttons that control the climate, stereo and the nav.

If you're in the front, you're in luck - it's a comfortable place to be, with plenty of leg and headroom. Down back isn't terrible despite the coupe roofline. The two seats are nicely shaped for maximum comfort and separated by an odd plastic tray. The fold-down armrest has two cupholders.

Front seat passengers score a pair of cupholders (bring the total to four for the car) and the long doors will hold a bottle each.

The boot swallows a reasonable 445 litres, which isn't at all bad.

The Inster stretches 3825mm long, 1610mm wide and 1575mm tall, but it rides on a 2580mm wheelbase – the later being bigger than the Hyundai Venue, and almost as big as the Kona.

It has allowed Hyundai to stretch the legroom options in the backseat, which actually gives you more space than the two bigger SUVs mentioned above, helped massively by the fact the Inster's rear pew is on rails, allowing you to slide it right back, and that it reclines a fair way, too.

I'm 175cm and I found I had more than enough leg and headroom, and with the backseat in full La-Z-Boy mode, I could sit back and relax, even on a longer journey.

It's a good thing it's four seats only, though. While the Inster feels longer than it is, it doesn't feel any wider, and even in the front seat you can feel like you're in economy class when you have a passenger on board, with both of you rubbing elbows on the central armrest.

Clever storage abounds though, with hidey-holes, handbag hooks and more dotted throughout the cabin. Opt for the roof box – and wear the efficiency penalty – and you can pop another 75kg worth of gear on the roof.

Also cool is the fact the backseats fold completely flat in the entry-level Inster, upping the storage possibilities. And in the top-spec Cross, the front seats fold down, too, allowing for fairly long items to be stowed. Though why you would need the driver's seat to fold flat is a bit of a mystery, unless you're looking to turn your Inster into an immovable storage container.

Apparently in Korea you can option a mattress that slides over all four seats, but I can't see that taking off here.

The official storage numbers are 280L and 1059L, and the small boot is helped along a little by underfloor storage where you can pop your charging stuff.

The Inster is available as an entry-level model, which comes as a Standard Range for $39,000 before on-road costs, or an Extended Range for $42,500. It then steps up to the Inster Cross, which is $45,000.

For perspective, the Geely EX5 is considerably bigger, and will travel further on a charge, for $40,990 before on-road costs. Then there's the Chery E5, which is now  $39,990 plus on-road costs.

Anyway, the Inster nabs 15-inch wheels, dual 10.25-inch screens (one for the multimedia, another for driving info), a six-speaker stereo, Apple CarPlay and Android Auto, cloth seats, two V2L connectors, a wireless charging pad and rain-sensing wipers. The equipment list for the Extended Range is the same, but it rides on 17-inch alloys.

Stepping up to the Inster Cross scores you a unique and off-road-inspired look, but also leather trim inside, a unique design for its 17-inch alloys, heating and ventilation for the front seats and heating for the steering wheel, some extra safety kit and practicality perks, and the option of a sunroof or an exterior roof storage box, the latter of which seriously eats into the driving range.

A lot of your extra money turns up under the bonnet. These days the 440i packs BMW's slick B58 turbo straight six and the B4S does likewise. The boys from Buchloe in Bavaria (there are certain to be women there, too, I just liked the alliteration) added a pair of Alpina-spec turbos to generate a whopping 324kW and, more importantly, 660Nm. Alpina says 600Nm (the max torque figure of the brilliant M4 CS) is available from 2000-5000rpm, while the full 660Nm is available from 3000 to 4500rpm.

The M4 Pure has 317kW and 550Nm from the S55 straight-six. Just so you know.

Like the 440i but unlike the M4, the B4S employs the dependably brilliant eight-speed ZF automatic found throughout the BMW range.

The Hyundai Inster Standard Range kicks off power proceedings, with a single front-mounted electric motor producing 71kW and 147Nm.

Next is the Extended Range, which shares its outputs with the Inster Cross. Here, the front-mounted motor’s outputs have been ticked up slightly, now producing 84kW and 147Nm.

Those aren’t big numbers, but then neither does either Inster feel particularly slow or underpowered. 

Alpina quotes 7.9L/100km on the combined cycle and we went through the premium unleaded at the rate of 11.7L/100km. I enjoyed myself, so that's not a terrible result.

Standard Range cars get a 42kWh lithium-ion battery, producing a driving range of 327km. The Extended Range and the Cross get a bigger 49kWh battery, increasing the range to 360kms. Now, that roof box. It does look cool, but you’re going to really need to carry stuff to choose that option, given it increases energy consumption by 25 per cent, reducing the Cross’s range to just 293km.

When it comes to charging, the Inster is set up for 120kW DC fast charging, or 10.5kW AC charging - provided you have that much power available at home, as most wall boxes are more like 7.1kW.

One of the key differences between the B4 and M4 is the ride. While the M4 can crash over bumps and generally be a little hard to live with, the crew in Buchloe have gone after a much more plush ride. And in that they have succeeded because the B4 S is a mighty fine cruiser. Bumps are dismissed with a haughty disdain, even Sport + silliness doesn't completely write-off ride quality.

Very impressive too, is the steering. While still not at Lotus Elise levels of feel (few cars are), the Alpina tweaks connect the your palms to the road with more clarity than what you'll find in the 440i or M4. Where the M4 particularly adds too much weight, the 440i is a bit more circumspect in that regard.

And then we come to the engine. The B58 six is a belter, better even than the N55 that preceded it. It's still a 3.0-litre straight six but is part of BMW's modular engine family that starts with a 1.5-litre triple in the Mini and 1 Series. The Alpina-spec turbos are noisier, the Akrapovic exhaust lighter and also noisier. It doesn't have the all-out crackle and pop of an Audi or Merc (perish the thought), but when you're on it, the B4 means business. The 660Nm of torque, available over a wide rev range, delivers a steel fist wrapped in a velvet glove and bubble wrap - the speed builds rapidly but smoothly. 

The approach to the chassis tune seems to be based on the driving talents of mere mortals on normal roads, which is kind of like the 440i. It's terrific fun to drive hard but it's very forgiving and patient. The great thing about it is that you wouldn't think twice about jumping in it for the long haul, so comfortable and quiet is the cabin. The M4 will leave it for dead on a winding road, but that's perfectly fine.

One irritant is the replacement of the admittedly cheap BMW gearshift paddles with weirdly non-tactile buttons. They're not particularly easy to use and, probably worse for a sporty car, unsatisfying. It's an odd detail with which to go off the reservation. Cheeringly, the eight-speed ZF is its usual perfect self, so you don't have to worry too much about manual mode or go old school and use the shifter.

Honestly, the impact electrification has had on vehicles in this class is staggering.

It wasn't so long ago that these micro cars were fitted with underwhelming petrol engines, four- or five-speed gearboxes and all the noise-deadening technology of a tin of beans.

As a result, they were cute, but painful. It always felt like you had to wring their neck to get the most out of them, and when you did, they were loud, buzzy and annoying.

But the Inster is none of those things. While not ludicrously powerful, the electric propulsion offered, and the nature of the way it's produced, feels ample in the little Hyundai, with the acceleration smooth, silent and easy,

It's also just generally quiet. Hyundai says it has double-sealed the doors, used thicker glass and fitted full underbody coverings to reduce the NVH - or noise, vibration, harshness - levels, and all of that, combined with the peace and quiet of an electric motor, have created a mostly blissful cabin experience.

The ride and handling hasn't been through the full Hyundai Australia ride and handling calibration of old. Instead, it's undergone the brand's more modern approach, which is to take the best componentry from what's available overseas and then build the Aussie-spec cars from there.

Either way, it all works pretty well here. Only really big bumps clang into the cabin, with the Inster otherwise riding well over all of the road surfaces we encountered.

The point, I guess, is that it's a drive experience stuffed full of happy surprises. The ride, the acceleration and the refinement are all well up on what you might expect from a city car.

The Hyundai Inster is yet to be crash tested, but does arrive with a solid safety offering including seven airbags, as well as active equipment like a auto emergency braking (AEB), rear cross-traffic avoidance, lane keep assist, and active cruise control.

The Cross ups the equipment a little more, including a surround-view monitor, blind-spot monitoring and front parking sensors.

Alpina offers a two-year/unlimited-kilometre warranty which is a bit behind the times and not in keeping with the price point. Servicing is another matter altogether and you're subject to your dealer's standard charges for servicing.

The Inster delivers super long service intervals, requiring a trip to the service centre every two years or 30,000kms, but each service is priced at $655. A Toyota Yaris Cross, for perspective, will see you visit the service centre twice as often, but each visit will only cost you $255, or $510 every two years.

The Hyundai warranty is five years/unlimited kilometres, while the high-voltage battery is covered for eight years.