Super-saloon shootout: BMW M3 vs AMG E63 and Alfa Giulia QV

The new torque-converter gearbox is better than the old dual-clutch unit. The new S58 twin-turbocharged straight six has greater mid-range muscle but still really revs, and it sounds right, too. The steering has come on for crispness, accuracy and feel. The M3 has really come on in all sorts of ways but still seems familiar – just as BMW would’ve wanted it to.

But is it good enough to put the defining M car back on its old pedestal? Is this now a world-beating super-saloon for our modern times? Or has it simply become too big and expensive for its own good?

To answer that last question, we need both the Alfa Romeo Giulia Quadrifoglio – our favourite junior super-saloon – and a bigger-boned, bigger-hitting option such as the newly facelifted Mercedes-AMG E63 S (a V8 autobahn express that isn’t about to be permanently discontinued, praise be). There isn’t a C63 S here, because with the brand-new C-Class comes the demise of the old V8-powered version (boo indeed). And that does rather seem to clear the way for the new M3, were it ready to take a step back towards its best, doesn’t it?

Well, it seems pretty ready to me. Maybe it doesn’t look it, but you can be the judge of that – and, if social media is any guide, plenty are willing to be. “Ugly as a hat full of arses,” is it, Twitter? Bravo.

But here’s something: after spending a couple of days with it, the M3 seems to me a significantly better-looking car than the M4. It doesn’t have its coupé sibling’s awkward rear haunch, plus there’s a bit less fussiness about it elsewhere and a bit more design discipline.

That makes taking that grille from the 4 Series and slapping it on the front of what might otherwise have been a tasty-looking performance saloon an even more inexplicable decision, of course. (BMW says the new M cars need the cooling, but come on.) Yet, although I couldn’t before, I think I’m beginning to see who this car is for, and that has calmed me down quite a bit from the heights of my Kidneygate temper.

Those more conversant than me in these things are currently calling the design language being used by the likes of Audi and BMW on cars such as these ‘Terminator styling’. It’s deliberately bulky and aggressive; a kind of shock-and-awe approach. You and I may not like it, but there may be some thinking behind it all.

This M3 almost fits that theme, but to me it’s less James Cameron’s Arnold Schwarzenegger and more Michael Bay’s Transformers. It’s what Optimus Prime might look like if he were nine-tenths finished morphing into a BMW. And as challenging as it surely is, both the grille and the swollen metalwork surrounding it do feed into that look. If you’re just the right age for it to flick the correct switches in your head, well, fair enough.

One thing the M3’s styling does do rather well is to make the E63 S look fairly discreet – almost invisible, actually. But it only serves to underline the visual supremacy of the Giulia Quadrifoglio over both of its rivals here; it remains just about the very best-looking four-door saloon made anywhere in the world. I think it’s prettier even than the Porsche Taycan.

The Giulia is a car that you could take anywhere; unlike either of the German options, it’s also a car that very few people seem to judge you for driving. In the real world, there’s much to be said for that. And as one tester pointed out as we were looking at all three of our cars parked in a line in the Blyton Park paddock: “It doesn’t cost any more to make a good-looking car, does it? I mean, you’ve got to design it anyway.”

So where exactly can the BMW start taking some points back from the Alfa? It’s a bigger car, for one. In some ways, that gives it ground to make up as a driver’s car (and we will get to that), but it also makes it significantly roomier in both rows of seats. The E63 S really isn’t much more spacious in the back.

The M3’s driving position? Absolutely stellar: low, straight, super-adjustable and very thoroughly supported by BMW’s new M Carbon Bucket Seats (which, yup, are in a £6750 options pack) but also by the cabin architecture around your knees and elbows. It’s a cabin of high apparent material quality, too, unlike the Alfa’s. The primary ergonomics of the Giulia are still pretty good – and in the E63 S, although you sit relatively perched up, the driving position is fine. But fine isn’t stellar.

To the engines, then. An AMG V8 series-whitewash, surely? Well, sure enough, there’s absolutely no chance of mistaking the E63 S’s advantage on outright potency when you jump between these cars during a track session. Even in something that’s more than 200kg heavier than either of its opponents, 627lb ft of torque is, well, significant. Monstrous is another word for it.

The E63 S is obscenely fast. If you disengage its front driveshafts (thanks, Drift mode), it will spin up its rear wheels all the way through third gear and well into third on dry asphalt. And if we had had time to record lap times during the making of this test? I’m certain that making up on the straights what it lost to its smaller, lighter and firmer-sprung rivals through the corners wouldn’t have been the slightest problem for the big Mercedes.

Whether there’s a V8-powered C63 in the world or not, so long as cars like the E63 S exist, the M3 will never have super-saloon bragging rights on drag-race acceleration. And it doesn’t matter a jot, because the M3 is still a properly fast car: on the road, on a track, anywhere. Don’t worry that you will want or need more than 503bhp from it.

The Giulia’s V6 engine actually matches the AMG V8 for combustive character. There’s a popping, slightly histrionic sweetness about it that you can’t help but love and which the M3’s straight six can’t quite compete with for simple audible charm.

But that Italian motor is just a little bit peaky and laggy. In practice, it needs revs to pull really hard and just a split-second’s notice to wind up its elastic mid-range. The M3’s straight six, which is superbly clean-revving, crisp-responding and staggeringly linear in its power delivery for a force-fed engine, just doesn’t need either. It beats the Alfa engine for both spread of torque and outright strength of performance. So that’s that. Munich’s response to the green-cloverleafed challenge that Turin set it five years ago always was likely to start under the bonnet.

But it’s how deep that response runs into the M3’s chassis and steering that really puts the BMW back on top – for this tester, at least – by a narrow but critical margin. Not for everyone, though. Three of us testers drove the M3, the Giulia and the E63 S over two days on the road and on a track during the course of this test, and the other two – Prior and James Disdale – ended the exercise liking the Alfa best.

Awkward, that, but it wouldn’t be fair to hide it. Autocar testing is usually a pretty democratic business. The thing is, the tester whose job it was to make the argument in writing (and who did the most on-road miles in it) thought – and still thinks – the M3 does it slightly better. Here’s why.

This BMW may be a fairly big saloon now (wider across those carbonfibre-capped door mirrors than even the E63 S, would you believe, and only very slightly narrower in the body), but it still feels low enough, lean enough, sufficiently agile and flat and superbly spry and precise to be in a different dimension than the AMG for overall driver involvement.

That the longer, heavier car could stay with it around a track and would simply lay waste to it on an autobahn may be true, but it counts for much less than other things when you’re weighing up the overall driver appeal of the two cars. The smaller saloons both clearly have more of it, which might surprise you.

The M3 works better on a track or a well-surfaced A-road than on a really sunken, uneven B-road, admittedly. But super-saloons aren’t and never have been perfect cars for fast back-road driving. The Giulia may be more fluent over bumps and feel narrower between hedges than the M3, but a good hot hatchback or a lightweight two-seater would be much better than either. Super-saloons are cars for bigger, faster, smoother roads, typically – and tight, bumpy ones can make even the Alfa feel underdamped and overpowered.