Alpina B5 VS Audi S4
- Cleaning the wheels
- Room and storage space could be better
- Not the most engaging car to drive
- Understated looks
- Goes like stink
- Overly heavy steering in Dynamic mode
- Tyre roar on some surfaces
- Can feel a bit computer-driven
The BMW Alpina B5 Bi-Turbo is not actually a BMW. Not according to the German Federal Motor Transport Authority, at least.
Nope, the modifications applied by tuning house Alpina to the 5 Series are deemed so significant that if you open the bonnet and look inside the engine bay, you'll see that the BMW VIN has been struck through twice and an Alpina vehicle number stamped underneath it.
The B5 is not the first model to be recognised in this way, either; the German government has recognised Alpina as a seperate car manufacturer since 1983.
The B5 has other ‘B' siblings, too. There's the B3 S Bi-Turbo, which is based on the BMW 3 Series, the B4 S Bi-Turbo (the BMW 4 Series) and the B7 Bi-Turbo (I don't need to tell you what this is based on, right?) which I've reviewed, too.
So just what has Alpina done to this unsuspecting BMW 5 Series? Is it really worth the extra money? How does the B5 compare to an M5? Could it actually be superior? And did they really take the speed limiter off to let it warp-speed to beyond 300km/h?
Peter Anderson road tests and reviews the new Audi S4 sedan and Avant, with specs, fuel consumption and verdict at its Australian launch between Bathurst and Canberra.
Sometimes year a year flashes by and it's almost a shock to realise that Audi's B9 A4 has been with us here in Australia for almost that long. Performance buffs have had to wait for the first quick version of the A4 while the Allroad was rolled out, but here we finally have the first Audi Sport variant in the line-up - the S4.
As with the standard A4, there's a stack of new stuff and a stout standard specification list along with technical packages. There's one big piece of news, too - it's the first S4 to land with a price tag under $100,000.
|Fuel Type||Premium Unleaded Petrol|
The Alpina B5 is a special car – more special than most people will ever give you credit for if you own one. Those that do know what an Alpina is will let you know; people will cross dangerously busy streets to talk to you about your car. Insanely fast, almost incomprehensibly comfortable and effortlessly powerful to drive.
Does the Alpina B5 make a BMW even better? Or do you think the M5? Tell us what you think in the comments below.
It's not an exuberant machine and you can tell there's still a ton of room for the inevitable RS4 mean machine to go after the BMW M3/M4 and AMG C63. That means, however, that the S4 is a proper sleeper. Hardly anyone will notice what it is until they're eating your fumes while you whisk yourself away in (mostly) quiet and comfort.
The new S4 is lighter, slightly faster and more technologically advanced than its predecessor, while bringing the A4's charms to the go-faster part of the executive sedan segment. This one will rattle a few cages.
Audi S4 Sedan and Avant Specifications
List price: $99,900 (Sedan) / $102,900 (Avant)
Fuel Consumption: 7.7L/100km (Sedan) / 7.9L/100km (Avant)
CO2: 175g/km (Sedan) / 178g/km (Avant)
Fuel Tank: 58L
ANCAP: 5 stars
Warranty: 3 years/unlimited km
Service Interval: 15,000km or 12 months
Engine size: 2995cc
Fuel Type: PULP
Transmission: 8-speed automatic
Spare: space saver
Turning Circle: 11.6m
Length: 4745mm (Sedan) / 4745mm (Avant)
Width: 1842mm (Sedan) / 1842mm (Avant)
Height: 1404mm (Sedan) / 1411mm (Avant)
Interesting is the right word for it, because while it might be questionable that Alpina's changes to the exterior are aesthetic pleasing, they are definitely intriguing to those who aren't familiar with the brand.
First, there are those 20-spoke wheels. Alpinas have worn this style of wheel forever and they've become the most famous outward sign that this is not just another BMW. So don't under any circumstances take them off and replace them with anything else. You'd be run out of town by the Alpina mafia.
Yes, they're more painful to clean than a cheese grater (trust me, I know. And if you look closely at these images you can see the dirty bits I've missed), but if you really don't like them then perhaps it's a sign this car isn't for you.
Then there's the boot-lid spoiler. It's square and 1980s'-looking, it also appears a bit like it's been bought online and installed by a teenager, but again, this is another Alpina tradition and it suits the car's character perfectly.
All right, those pinstripes; they're known as the Deco-Set and are a hat-tip to the Alpina racecars of the 1970s and '80s. Again, don't take these off, your Alpina will drop through the centre of the Earth in value. These are also part-and-parcel of owning one of these cars. I'm not a massive fan of them.
But I'm all about that front spoiler, with the floating Alpina lettering that you can option in silver, high-gloss black or gold.
Inside, there are fewer Alpina additions, but they're nonetheless unmissable. There's the Alpina-badged steering wheel, and a new virtual instrument cluster, embossed headrests and illuminated door sills.
There's also the little numbered plaque on the centre console which proves its authenticity, ours was number 49. Out of how many? I don't know. But I do know Alpina produces only about 1700 cars globally a year. Rolls Royce does about 4000. So, you can rest assured your B5 is exclusive.
At almost 5m long, 1.9m wide and 1.5m tall, the B5 is a large saloon, but having recently reviewed the Alpina B7 it feels small in comparison. How does it drive? We're getting there.
Audi tells us that S4 owners don't like to shout about their purchase, which is just as well, because the S4 looks like a very mildly gussied up A4. That means the same sharp looks as the A4 but lower, 23mm to be exact. The standard 19s make it look lower still but all the standard A4 cues are there. This has been covered at length already, but just to be sure, every inch of the car is new, it just looks a lot like the old one.
Get up closer, though, and you'll see the serrated shape of the headlight, the clamshell bonnet and shutlines tighter than Scott Morrison on Budget night when it comes to funding hospitals. Audi says the body kit is aggressive but I think it's safe to say that the drug of choice at Audi's styling bureau is chamomile tea - it's fairly restrained, with just a few details (including a slightly daggy V6T badge on the front guards) to mark it out.
Inside is standard A4, too, with plenty of leather (both real and man-made), with some extra zing in the form of carbon and aluminium bits.
It's as roomy and comfortable as the standard car and looks just as good. It's a fine interior, the best in its class.
Practicality is not really a BMW strong point no matter which model you pick. See, BMW mostly makes the car equivalent of uber-stylish and skin-tight active wear which looks good and performs brilliantly, but sometimes you just want pockets and a bit of room for your… um… bits and pieces.
So while there are two cup holders up front and two in the back, the bottle holders in the doors aren't huge, the centre console bin is on the small side, there's a hidy-hole in front of the shifter, the glove box is just a box for little more than gloves and there's no other great cabin storage options.
Legroom in the rear is good but not great, too - I'm 191cm tall and have about 30mm between my knees and the seat back in my driving position. Middle-seat passengers will also have to straddle the drive shaft hump in the floor. Headroom is restricted in the back, too (you could blame the sunroof) with my hair just skimming the headlining (I do have big hair).
Under that power tailgate, the B5's boot capacity is 530 litres which is 15L more than its big sister, the B7. There are two plastic storage areas either side of the luggage space for wet things. While there is one USB outlet in the front there aren't any in the rear.
The S4 has four bottle holders, cupholders front and rear for a total of four and various slots and spots for phones and keys in the front while the rear is a little less accommodating of bits and pieces.
The sedan's boot is the same as the rest of the A4s (and mid-size Germans) at 480 litres while the Avant bumps that up to a 505 litre minimum and a 1510 litre maximum when you drop the seatbacks.
Price and features
The BMW Alpina B5 lists for $210,000, making it only $10K more the BMW M5 which comes with almost identical features apart from the Alpina engineering to the engine and chassis.
Arriving standard is leather upholstery, four-zone climate control, nav, the Alpina embossed-headrests, a 10.25-inch display, digital radio, Alpina door sills, sunroof, proximity key, power front seats, 12-speaker Harman Kardon stereo, head-up display, Alpina virtual instrument cluster, heated front and rear seats, and the 20-inch Alpina wheels.
The test car I drove had been optioned with a limited-slip differential ($5923), steering-wheel heating ($449); soft-close function for doors ($1150); sunblinds ($1059); TV function ($2065) ambient air package ($575), and front-seat ventilation ($1454).
The S4 is available in two versions - sedan and Avant wagon. The sedan opens the bidding at $99,900 and the Avant closes it at $102,900. Both come with identical specifications and are available with much the same options. For a bit of pricing perspective, the first S4 was an Audi 100-based five-cylinder turbo that landed with a price tag of $132,000. In 1993.
The S4 has arrived with 19-inch alloys, adaptive dampers, around-view camera, reversing camera, up-spec sat nav, adaptive cruise control, auto parking, auto headlights and wipers, high beam assist, keyless entry and start, electric tailgate (Avant only), heated folding electric mirrors, LED headlights, dynamic scrolling rear indicators, electric heated sports front seats, leather and Alcantara trim, three-zone climate control and interior LED lighting.
A ten speaker stereo is powered by Audi's MMI rotary dial system and the same 8.3-inch screen as the rest of the A4 range, which also means you get Apple CarPlay and Android Auto as well as two USB ports in the centre console to go with the Bluetooth. There's also a DAB+ digital radio.
Audi's Virtual Cockpit is standard and has an additional S mode which switches the dial view for a big tacho and a huge digital speed readout.
Being an Audi, you can get a collection of options in packs. The S Performance Package ($5900) adds an excellent pair of massaging S sport front seats with diamond stitching and Nappa leather, red brake calipers, more (synthetic) leather and carbon inlays in the interior.
The Technik Package adds the excellent matrix LED headlights, the 19-speaker B&O 3D sound system and a heads-up display.
Other options include variable ratio Dynamic Steering ($2210), quattro sport differential ($2950), premium paint (ahem, $1846), panoramic sunroof (Avant only, $2990), sunroof ($2470, sedan only), heated rear seats ($750) and the rear seat entertainment system ($2600-$4680 for one or two screens respectively, but you can't have it with the S Performance pack)
Engine & trans
The Alpina B5 uses the same 4.4-litre V8 engine found in the BMW M5 (and also the B7). But, and it's a big but, the M5 makes 441kW and 750Nm, while the B5 outdoes it with 447kW and 800Nm. Admittedly, the B5's torque arrives at the 3000rpm mark, while the M5's is all there from 1800rpm.
How does the B5 beat it? Alpina installed its specially developed twin turbochargers and intercoolers, a high-performance cooling system, a reconfigured air intake set up and a different exhaust system.
The B5, though, is a tenth of a second slower to 100km/h compared to the M5 with a time of 3.5 seconds, but it will blast on to a top speed of 330km/h while the M5 is limited to 250km/h in regular form and 305km/h with the optional M Driver's package.
Both uses the same ZF eight-speed automatic transmission with identical gear ratios, and both are all-wheel drive.
Audi says the turbocharged V6 is brand new from the ground up. Developing 260kW (15kW up) and a nice round 500Nm (up 60Nm), the new engine is 14kg lighter than the supercharged unit it replaces, and more efficient.
Efficiency gains come from clever things like a "hot side inside" turbo placement (inside the V, meaning shorter exhaust paths to better turbo pressure), lift-off coasting and start-stop.
Power reaches the road via an Audi Sport tweaked quattro system which can send 85 percent of power in either direction and is rear-biased with a standard 60/40 rear/front torque split. The seemingly ubiquitous and always excellent eight-speed ZF transmission handles the job of getting the power from the engine to the road.
The standard self-locking centre diff can be flung and replaced with a trick quattro sport unit ($2950) with electro-mechanical control of the rear axle's torque split.
The sedan will rocket to 100km/h in 4.7 seconds, the slightly heavier Avant two tenths behind it.
The Alpina B5 needs petrol. By that, I mean it needs quite a lot of it if you want to enjoy it properly. What type of mileage does it get? Officially, it should use 11.1L/100km after a combination of urban and open roads, where as the M5 is set to 10.5L/100km.
That makes sense, the B5 produces more power and torque, and it's 85kg heavier than the M5 at 2015kg.
Our test car's trip computer was reporting 13.2L/100km after flying low over country roads and slow city piloting. The more time spent in the urban warfare that is the daily peak hour commute, the more that figure crept and hovered around the 15L/100km mark.
Audi claims 7.7L/100km from the sedan and 7.8L/100km for the Avant. On a stinking hot day in central NSW and the ACT and with the accelerator spending a lot of time carpet-bound, the S4 still returned around 12L/100km. More time being driven less enthusiastically should see a marked improvement.
Ok, stay with me here. For this next bit you'll need a fresh egg, a lounge chair, and it might be a good idea to have some plastic bags and carpet cleaner on hand.
First, in front of the lounge chair flatten out the plastic bag and place the egg on it. Next, sit down on the chair and very carefully rest the ball of your foot on the egg with as little pressure as humanly possible.
This is exactly how little force you need to apply to the go-pedal of the B5 to accelerate from a standstill to 60km/h in about five seconds.
If anything sums up the driving experience of the B5, it's that sense of effortlessness.
Stomp on that accelerator, and you'll be shot to 100km/h in 3.5 seconds, without a hint of broken traction thanks to the all-wheel-drive system.
The ride should have been terrible on 20-inch wheels shod in low-profile rubber (Pirelli P Zero 255/35 front, and 295/30 rear), but the Alpina-tuned air suspension is close to miraculous in the way it cushioned and censored the potholes out of Sydney's worst roads. Yes, it can be a touch floaty, particularly in the Comfort Plus setting, but this is benchmark-setting stuff for a comfortable ride.
Don't expect this beast to roar. Unlike the M5, the B5 gets its work done without deafening everybody around it. Sure, the B5's V8 sounds amazing when you push it, but it's not brash, not loud and not lairy. Buy an M5 or Mercedes-AMG E63s if you want to be heard half a block before you get home, but you won't get that with the B5 and its exhaust system.
The B5 also handles well, but I have to say the engagement factor is low. I piloted it effortlessly through the twists and turns of my country test circuit and roads which normally have me grinning like a maniac behind the wheel had me feeling a bit disconnected in the B5. That air suspension, the numb steering and pedal actions make it difficult to ‘feel' the road.
It's highways where the B5 is a king, but even at 110km/h there's the sense that this car is still fast asleep and won't get out of bed for anything less than 150km/h - making it perfect for Germany's autobahns, but maybe not for here in Australia.
The S4 is terrific fun. It's that simple. The new engine is an absolute belter, with all 500Nm of torque available at just 1370rpm. Lag is almost indistinguishable as the turbo spools up and rockets you along to 100kmh in under five seconds, that huge half-ton of torque sweeping you down the road.
With dynamic mode switched on, the car muscles up with firmer suspension and a slightly growlier exhaust. The steering really weights up, too, which takes a little getting used to after the lighter, friendlier setting in Comfort mode - thankfully you can set up an individual mode to dial the assistance back in while everything else is set up for go-fast.
The key to the fun is the rear-biased quattro system - while it's never going to match the purity of BMW's rear-wheel drive 340i, what you lose in steering feel and ultimate adjustability, you gain in off-the-line and mid-corner grip its German rivals could only dream of.
Going fast in an S4 is easy, leaving you to concentrate a little more on your line and gear selection, listening to the distant bark of the engine and the occasional turbo whistle. All of this is purely down to driving taste, of course but the point is, the S4 offers something a little different to the other two.
For most of the time the S4 defies its 1700kg-plus weight but there is the occasional hesitancy when changing direction through a challenging set of bends, as though the front tyres (245s all around, if you're interested) want to scrub and the quattro system makes a quick adjustment to stop it happening. You don't feel that's what's happening, of course - Audi Sport is better than that - but it's part and parcel of all-wheel drive. It takes a lot to find understeer and for most people, that just won't ever happen.
Further confidence comes from the terrific brakes - 350mm up front and 330mm at the rear, the big forward rotors are gripped by six-pot fixed calipers. Performance is epic and in hard, fast driving they stood up to a fair amount of punishment without fading.
The ride is excellent in all modes, which is quite an achievement given the fat rubber and big wheels, although big bumps at speed make a huge metallic thunk without actually upsetting progress. The eight-speed ZF is brilliant as always and unless you're really motoring, you don't even need its sport mode, which brings impressively fast and positive shifts.
The best thing is, if you don't look in the rear vision mirror, you can't really tell if you're driving sedan or Avant. That might be because it's quite absorbing on a launch drive, but I couldn't split the driving experience between the two.
The only black marks I could easily identify on the S4 is tyre noise on some surfaces and perhaps the steering could be a little more lively like its competitors.
The Alpina B5 is based on the BMW 5 Series which had a five-star ANCAP rating awarded to it in 2017.
Along with the comprehensive suite of airbags, traction and stability control, there's an impressive array of advanced safety equipment. Coming standard is AEB (front and rear), evasive steering, front and rear cross-traffic warning, blind-spot alert and lane-keep assist. The Alpina B5 also comes with BMW's emergency call function.
For child seats you'll find two ISOFIX mounts and three top tether points across the rear row.
If you're unfortunate enough to get a flat tyre, there's a puncture repair kit in the boot which works provided the hole isn't giant, as I've experience in the past with these systems.
The S4 also retains the exit warning feature that tells you if you're about to door an approaching bicyclist or another car. What Audi calls "pre-sense rear" is a system to warn drivers behind you they're approaching too fast and are quite likely to hit you. Turn assist is also available, stopping you (at low speeds) from turning across approaching traffic.
The A4 scored five ANCAP safety stars, the highest available.
Audi offers a three-year/unlimited kilometre warranty on the S4 with service intervals of 12 months or 15,000km whichever comes first. Roadside assist is part of the package, lasting for the first three years of the car's life.
You can pre-purchase three years/45,000km of servicing for $1620 under Audi's Genuine Care Service Plan. Full details are available on Audi's website, but it basically covers a scheduled oil changes and inspections and not a lot else.