BMW 2 Series vs BMW Alpina B4

What's the difference?

It may be expensive for a small coupe. And EVs have reframed performance standards to the detriment of most internal combustion engine sports cars like this – at least for acceleration times. But the M240i xDrive Coupe is far more than just about numbers, imbuing the soul and spirit of what makes this brand’s vehicles so enjoyable and memorable to drive.

A unique and most-welcome survivor today, the MY25 makeover takes all that, and improves the interior, to be at the heart of what BMW has traditionally done best (styling aside). We found parting with it at the end of our term very difficult.

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.

BMW has iconic form when it comes to coupe, err, form.

Consider the timeless E9 Coupe of 1968, its elegant E24 6 Series successor of 1976 and the chiselled E31 8 Series of 1990.

Even the sinewy E82 1 Series Coupe of 2007 still resonates.

But, despite boasting long-nose/short-tail proportions, today’s G42 looks awkward from some angles, like a Lego version of the preceding F22 of 2014, complete with cartoonishly aggressive detailing that don’t sit happily on the car.

Not Munich’s finest moment. Still, as one of the last surviving small coupes, we’re still very glad it exists. And, in a rare case of more being more, this M240i’s body kit disguises some of the heavy-handedness.

So, what’s new here? Barely earning the facelift tag outside, the MY25 2 Series Coupe gains extra colours, restyled alloys and revised exterior trim, with more body paint in the lower parts and rear apron, as well as high-gloss black for the M240i’s mirror caps.

Inside, the modifications are more profound, updating to BMW’s 'Operating System 8.5', offering improved functionality and all housed within a fetching, single-piece rectangular display screen that also takes in the instrumentation.

Along with a flat-bottomed steering wheel, redesigned air vent knobs, fewer buttons, revised trim and different ambient lighting, they refresh what was a dated-looking cabin.

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.

You could be forgiven for thinking you’ve stepped into a mid-sized rather than small coupe, with today’s G42 being larger in every area except wheelbase than an E46 3 Series Coupe of about 25 years ago.

Length, width, height and wheelbase dimensions are 4548mm, 1838mm, 1404mm and 2741mm, respectively, which make for a surprisingly easy-to-access and spacious cabin – at least for adults up front.

In fact, if nobody is sat behind, even a 200cm-plus individual can stretch out. German cars are great at accommodating the 99-percentile people. And head room’s not bad either, even with the standard sunroof.

BMW’s are about driving, so no shocks to learn that the M240i’s driving position is first class. Sat low and snug, this is a suitably sporty yet incredibly comfortable and high-quality environment, aided by nicely bolstered M Sport seats, a lovely steering wheel and a beautifully presented dashboard. Everything fits like a glove.

If the notion of reducing the number of buttons in the newly-extended electronic interface raises red flags (how many times have we moaned about this in most software-based Chinese vehicles?), rest assured: the M240i’s ergonomics are spot-on.

There are still plenty of switches alongside the iDrive controller and gearshifter for all major vehicle functions, Porsche-style, as well as big old physical buttons for the (soaring) audio, to back up the screen shortcuts for more-detailed functions. It only takes a few moments to learn how easy and intuitive the whole set-up is. BMW leads the way here.

Crisp, clear and colourful digital graphics almost make up for the fact that the gorgeous old analogue dials of old are extinct. Instead, the company serves up unremarkable angular instrument displays and electronic readouts. Very comprehensive and informative, they do the job, but are utterly bereft of character or style. It’s as if Munich’s designers have forgotten how to make things look pretty nowadays. Hang on, do we see a pattern emerging here?

More solid Teutonic sensibility – this time far-more artfully served up – can be found in the excellent ventilation system, ample console-sited storage and pleasingly deep door pockets, highlighting how easy the M240i is to live with.

Crash regulations demand central posts, so no pillarless sides unfortunately in this modern coupe, but frameless door glass is nice (and assists in entry/egress when retracted), enhancing that sporty sensation.

The flipside is poor side and rear vision for the driver, but – frankly – it is otherwise difficult to fault the M240i’s interior layout and presentation.

Even the back-seat area tries hard.

The seats whirr forward and back (slowly) to increase/decrease the narrow aperture as required (using a shoulder-height lever within easy reach), though you’ll need to be pretty flexible accessing the two-person buckets that await. Once ensconced there, there’s sufficient space, padding and support for most folk of up to about 180cm to travel in reasonable comfort, as long as the front-seat occupants aren’t in maximum chaise longue mode and journeys aren’t too long. The quite-upright backrest angle can’t be adjusted.

Just ensure the climate control is on. Things can become pretty stuffy, quickly. And be thankful for the air vents, extended glass area, middle armrest with cupholders and reading lights.

Further back, there is a large-ish, 390-litre boot with a low, wide and flat floor, that can be extended by tugging on a handle to drop the 40/20/40 split/fold backrests as required.

The usual tie-down hooks, lighting and power outlets are present, but you’ll search in vain for a space-saver wheel. Just the dreaded 'tyre mobility kit' that – once deployed – will likely ruin your tyre and cost hundreds to replace. No thanks.

A gashed tyre. No phone coverage. What a way to ruin a great drive day out on your favourite rural roads and in such an immensely enjoyable car. Australia demands a spare tyre.

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.

If you thought BMW don't mess about when pricing up its cars, you best strap yourself in. The 440i-based B4S starts at a solid $149,900. That's $48,000 more than the 440i and significantly more than an M4 Pure. But there's plenty of gear on offer and some genuine, bespoke Alpina additions.

Standard are 20-inch signature Alpina alloys, 16-speaker harmon kardon-branded stereo with DAB, super-soft Merino leather everywhere, dual-zone climate control, around-view cameras, reversing camera, sat nav, keyless entry and start, front and rear parking sensors, active cruise control, heated and electric front seats, head-up display, auto headlights and active LED headlights, LED taillights and electric sunroof.

The stereo and sat nav are run by BMW's iDrive. It's a cracker of a system and almost gets away without Apple CarPlay and Android Auto. The absence of such simple pleasures at this price point is a bit lame, but here we are.

As before, the M240i employs a 3.0-litre direct-injection turbo-charged in-line six-cylinder petrol engine, making a heady 285kW of power at 6500rpm and 500Nm of torque between 1900rpm and 5000rpm.

A ZF-supplied eight-speed torque-converter automatic transmission is fitted (and, sadly, no manual is available), driving all four wheels via an AWD system with an M Sport-tuned differential.

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.

Rated as a Euro 6d-compliant vehicle, the M240i’s average combined fuel consumption figure is 8.0 litres per 100km, for a carbon dioxide emissions average of 185 grams/km.

With a 52-litre tank brimmed with premium unleaded petrol (98 RON minimum is recommended), that should result in about 650km between refills on average.

Over a mix of urban and highway driving, we managed 8.9L/100km, which is better than the pre-facelift version’s 9.6L/100km. That’s impressive stuff for a performance-orientated sports coupe.

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.

The M240i xDrive’s specification reads like it’s straight out of BMW fan fiction.

Nestled within a shrunken 3 Series-derived 'CLAR' platform brandishing near-50:50 weight distribution, stuffed between beefed-up struts up front, is a strident in-line six, driving the rear or all four wheels via an M Sport differential and held up by a multi-link rear axle.

The promise here is an athletic driving machine on one hand and a cosseting grand tourer on the other, but whether the M240i can walk that fickle red line as effortlessly four years on… well, that’s what we’re here to find out. As we said earlier, sub-3.5s Teslas and the like have really messed with the bang-for-your-buck playbook since 2021.

Luckily, the reality only reiterates the 2 Series Coupe’s place in the sun. Rather than the anodyne (or artificial) whine of an electric motor, here instead is one of the greatest modern engines in the world, mated to arguably the best auto transmission ever in existence.

That’s a terrific start. And, once the button is pressed, the M240i’s performance bandwidth is deeply moving and immensely satisfying.

With a kerb weight of 1690kg, the M240i’s power to weight ratio is an impressive 168.6kW/tonne, helping it to scoot from standstill to 100km/h in 4.3 seconds, on the way to an electronically-limited top speed of 250km/h. Note that the M2 flagship is just 0.3s quicker to 100.

Pottering about town in its most benign ('Eco Pro') setting, the B58-hearted Bimmer slinks about gingerly, purring like a content tabby while skimming along over all sorts of urban roads like a luxury car costing a lot more should, taking everything in its stride. Given this is what driving is like for most people most of the time, the BMW nails it.

More throttle unleashes a surging snarl as the BMW’s speed steps up, with varying degrees of urgency according to the driver’s will and desire. Racing up through the gears, the German straight six feels like it has barely stirred; like things are just warming up.

In conjunction with Sport mode, here is where the M240i really starts to take off, leaping into action, engine roaring as speeds soar as if every road is a stretch of derestricted autobahn. The pace of this coupe is quite remarkable. Planted yet precise, the steering firms up as the chassis hunkers down, and you’re left in awe of how calm and composed the car constantly feels. Even in pouring rain.

As the roads start to snake and twist, the BMW glides through the chosen line with startling grip and confidence, without ever feeling nervous or twitchy in standard traction settings, regardless of surface or weather conditions. That’s the AWD doing its thing.

The M240i is all about nuance and control, whether you’re talking steering, handling, roadholding, braking or electronic intervention. It is refreshing to feel so connected to the driving experience so intimately.

As we said back in 2022, plonking for Sport Plus mode, with the stability and traction nannies neutered, is an easy street to big old oversteer spills and thrills, if so desired.

And then, you’re back in Eco Pro, crawling along in cocooned comfort and relying on the ADAS tech to waft you along, before being back in 'Individual' mode as the road ahead clears, with powertrain in 'Sport' but the suspension in 'Comfort'; just right for times when you just want to streak ahead of slower traffic without pummelling your spine. It’s all there for you. The M240i can do it all.

Inevitably, in Sport mode the ride’s firmness can be fatiguing on bad urban roads. Likewise, the tyre noise over coarse bitumen is tiring over longer drives. And it is all too easy to exceed the speed limit.

Earlier, we said we prefer this over the extroverted, track-focused M2, despite the latter’s astounding speed, thunderous soundtrack and tremendous dynamic capabilities, and that’s because of the M240i’s ability to deliver pleasure with everyday user-friendliness. Plus, the performance flagship is only 0.3s quicker to 100.

Maybe the latest base manual M2 might change our minds.

As it stands, on the move, the M240i is BMW in full flight, staying true to brand values but without frying your nerves or depleting your bank account too much. We love it and you should too.

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.

The Alpina ships with six airbags, ABS, stability and traction controls, ABS, stability and traction controls, forward collision warning, forward AEB, road sign recognition and active cruise control.

There are also two ISOFIX points in the rear. Neither the Alpina nor the 4 Series has an ANCAP safety rating.

BMW offers a five-year/unlimited kilometre warranty, matching all of its German rivals, as well as three years of roadside assistance.

As always, servicing frequency is condition-based, depending on how they’re driven, amongst other factors, with an indicator on the instrument panel to alert the driver/owner. That said, our advice is to always visit your BMW dealer annually or at every 10,000km, just to be certain.

Capped-price servicing is not offered.

However, the ‘BMW Service Inclusive Basic package’ is available at extra cost, covering scheduled servicing for five years/80,000km, as long as the scheme is subscribed to before the end of the first 12 months of first registration. A 2 Series should cost from $2380.

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.