2014 Alpina D4 Biturbo <b>review Review</b> | Autocar |
| 2014 Alpina D4 Biturbo <b>review Review</b> | Autocar Posted: 24 Nov 2014 09:48 AM PST What is it?The sleek two-door sibling of the brilliant all-rounder of a car that is the Alpina D3 saloon. That means the Alpina D4 should be sensational, frankly. Beneath its slinkier, coupé body, the D4 has the same twin-turbo six-cylinder diesel engine as the D3, the same chassis and suspension design, the same eight-speed automatic gearbox and even the same steering and braking systems. The only areas in which it differs from the D3, in fact, are these: it has two fewer doors, a slightly lower-slung driving position and a price that's four and a bit grand higher. What is it like?Our test car rode on Alpina's optional 20-inch wheels, which look great, and was adorned with optional stripes, which don't. Beyond these subtle differences, though, we are talking about the same car fundamentally as the D3. Which means that you get a 3.0-litre straight six with 350bhp and 516lb ft. It's mated to ZF's ubiquitous but superb eight-speed automatic gearbox. And that's enough to fire the 1585kg D4 to 60mph in 4.6sec, to 100mph in about 10 seconds and to a top speed of 173mph. This is a diesel car, remember, not some hunk of fire-breathing mid-engined Italian exotica. The D4's best party trick, however, is its ability to deliver such thundering levels of performance while returning more than 40mpg in the real world, and a touring range of almost 500 miles. Fair enough, if you thrash the living daylights out of it, the D4 might return as low as 35-36mpg (shock, horror). But if you were to drive a factory BMW M4 in a similar fashion, it would be at least 10mpg if not 15mpg thirstier. In theory, then, the D4 should drive identically to the sharp-handling, smooth-riding, monstrously rapid D3, and in most respects it does. But there are slight differences in the detail, some but not all of which are welcome. For starters, the D4 test car's ride was not as soothing as our long-term D3's, almost certainly a consequence of it being fitted with the larger 20-inch wheels and tyres. These look sexier than the standard 19s, but they do little for the car's refinement. And in the end, the D3/D4's oozing sense of refinement is arguably its most defining characteristic. Second, the D4's driving position, despite being more sporting in theory, doesn't somehow feel as natural as the D3's. And then, of course, there is the extra visual appeal but also the equally clear reduction in practicality with the D4 purely because it has only two doors. On one hand, it's great to be able to have so much rear seat and boot space available in a coupé, as most cars in this class ask for more compromises in packaging than the D4 does. On the other hand, the styling upgrade from the already smart D3 is hardly significant, but not being able to access the rear seats via a separate door could be considered a significant compromise. Should I buy one?The D4 is a more than welcome – if slightly inevitable – stablemate to the excellent D3. Diesel-engined coupes may not sound like a match made in heaven, but the sheer pace of the D4, combined with its tidy fuel economy, is persuasive. As a pair, they make quite a duo. And when the convertible D4 appears early next year to go alongside these two, plus the D3 Touring, the picture-perfect range of Alpinas will be complete. Alpina D4 Biturbo Price £50,950; 0-60mph 4.6sec; Top speed 173mph; Economy 53.3mpg (combined); CO2 139g/km; Kerb weight 1585kg; Engine 6 cyls in line, 2993cc, twin-turbo, diesel; Power 350bhp at 4000rpm; Torque 516lb ft at 1500-3000rpm; Gearbox 8-spd automatic  |
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