Rolls-Royce Ghost vs BMW Alpina B4

What's the difference?

In a disruptive era when the coachbuilder has pivoted to SUVs like the Cullinan, a sort of London black cab that’s been dipped in opulence, and succeeds despite itself, and the brand’s grand, million-dollar EV, the Spectre, the Ghost is a safe and familiar space. 

A beautiful, long, broad, immaculate land boat. It’s a space Rolls inhabits with relish. 

The Ghost Series II feels nothing like a track-day option when you’re behind the wheel. But it might do if you were stepping out of a Phantom. Or a Cullinan. Or a Wraith. Especially if you’re stepping out of the back doors. 

It’s the perfect driver’s car. As long as all your other cars are also Rolls-Royces. 

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.

Yes, its exterior is more monolithic than before. The previous iteration was hardly fiddly, but the (apparently client driven) evolution here edges ever so gracefully towards what Rolls-Royce might secretly think of as brutalism.

The Ghost Series II’s generous 2148mm width is further emphasised up front, stretched across its upright prow, with slimline headlights adding definition and — surprisingly — a touch of villainy.

New, Spectre-inspired tail lamps and a discreetly inscribed double ‘R’ monogram add a reserved flourish from behind, and buyers can choose from two new 22-inch, nine-spoke wheel designs.

It’s subtle, no doubt. But it’s also impeccable.

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.

Inside, yes, there are bonkers touches in this most refined of automotive spaces, such as upholstery pinpricked by 107,000 'Placed Perforations' of 1.2mm in diameter, each individually examined, that replicate the shape of some clouds spotted over Rolls-Royce's Goodwood HQ. 

Beside those flourishes of lunatic opulence, the more practical features feel pedestrian, but they’re comprehensive. The wireless Apple CarPlay and Android Auto, the seamless 'Central Information Display' and the 18-speaker 1400-watt audio, the upgraded Wi-Fi hotspot and the unobtrusive USB-C ports. The rear-seats flush with giant, streaming-optimised screens and heated and ventilated massaging seats.

Rolls acknowledges the generational movement of its clientele from back seat to front, with over 90 per cent of buyers now opting to — gasp! — steer themselves in a Ghost. But with back-seat savoir faire in its DNA, Rolls simply extends its hospitality to every seat.

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.

Rolls doesn’t like acceleration figures — too gauche, darling — but armed with that proven 420kW and 850Nm V12, the Ghost Series II has serious heft. Delivering max torque from 1600rpm — just 600rpm above idle — the effect is genuinely of one endless surge, a wafting cloud of momentum that subtly slips between gears as it exudes itself across the countryside.

The Black Badge edition, like all of its, er, ‘disruptive’ ilk offers a ‘Low’ button (‘Low’ means ‘Sport’ in Rollspeak), which bumps gearshift speeds by 50 percent when you plant your foot, and delivers a distinctly non-Rolls-like pop and burble on overrun. It also provides an extra 21kW and 50Nm, because Black Badge is mean and tough.

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.

Provence is not entirely a driver’s paradise, with every stretch of slightly twisty tarmac only a counterpoint to a motorway lined with Marseille lorries, Depardieu-esque men in tractors who refuse to move to the verge, and small villages where each kerbside corners sit millimetres from the foot of an adjacent boulangerie.

Which is to say it’s neither a place for economy runs, nor a location at which to run up the consumption numbers with a madcap series of impromptu hill climbs.

Our Ghost II drive returned around 16L/100km, which feels about right with that gorilla-in-a-tuxedo 6.75L V12, and is only slightly above the official figures of 15.8L/100km. Not great, could be worse.

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 Ghost Series II drives like a magic carpet, serene and untroubled; in almost any stable other than that of Rolls, calling it a ‘driver’s car’ would have you throttled by their skunkworks. Everything is relative.

Still, it hides its considerable dimensions well. There’s never any doubt that you’re in a large saloon, as you white-knuckle the Ghost’s impeccably appointed steering wheel, but there’s always enough power to deliver creamily instant throttle response, even in the case of initially misjudged cambers. 

Nor can the Black Badge hide the shimmy of that characteristic ‘flight on land’ body drift. The upside is that its manners are impeccable, even through the worst possible pieces of corrugation Provence can deliver. 

If anything, the Ghost Series II’s big-hearted bulk adds to the fun factor, especially in some of Rolls-Royce’s more garish colour options, when gasping South of France MAMILs stare in amazement as a bright yellow, five-and-a-half metre Rolls passes them on the outside, scattering their various baguettes and garlands of onions.

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.

Expect just a four-year servicing and warranty offer for Australian customers of this vehicle. So that means an unlimited-mileage warranty, including all services, for the first four years. 

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.