DBS’ is one of those strange Aston Martin nameplates that seems to fall both in and out of favour. First seen in 1968, the original DBS was not what was intended, namely a car to replace the long-serving DB6. That’s because the V8 motor intended for it had endured a gestation from hell and simply wasn’t ready. So Aston used the old DB6 six-cylinder motor instead, resulting in a new flagship that was slower than the car it was intended to succeed. That finally arrived the following year, the name lasting until the car was facelifted into the Aston Martin V8 in 1973. Then nothing until 2007, when a car looking suspiciously like a hotted up DB9 wore the badge for five years, then nothing again until the current car appeared in 2018, which will itself be retired this year and the DBS name with it. Again.

But you can’t accuse this one of failing to go out with a bang. Aston Martin might call it a fitting farewell, you and I a run-out special, but there’s no denying this rather garishly entitled DBS 770 Ultimate means business. Aston Martin tends to do end of series cars rather well, well enough to make you wish they’d got around to it sooner, and this is no exception. Power for the mighty twin-turbo V12 (which I am assured will survive into whatever replaces the DBS) rises 45bhp to 759bhp (hence the ‘770’ pferdestärke or PS figure in its title), its gearbox has been reprogrammed for sharper shifting while significant modifications have been made to its body, structure, suspension and steering. Just 499 will be made, of which 300 will be coupés, with prices starting at, wait for it, £314,000. Ambitious? Apparently not: they’re all already allocated.

The big visual changes – the enlarged front air intakes and new horseshoe bonnet scoop – are there to provide the additional air needed to feed the more powerful engine. But I’m more interested in the solid-mounted steering column, 25% increase in front-end lateral stiffness, reprogrammed suspension and the fact the engine mapping has been changed to provide a different torque curve in each gear to provide the engine with a more naturally aspirated feel. Even so, I never quite saw the point of the DBS, unless you were someone who bought into some combination of the looks and the brand. A Ferrari F12 or its 812 Superfast successor was just a far faster and better car. Moreover, I had a particular soft spot for the AMR version of the DB11 and couldn’t really understand those who’d pay so much more money for a DBS with its barely enhanced driving experience.

Is this allegedly ‘ultimate’ DBS any better? Considerably so, I’m glad to report. In the same way that, 20 years ago, the DB7 GT made you realise just how good the DB7 Vantage could have been, so too does the 770 turn the DBS into something that finally feels as good to drive as its specification always suggested it could be, but somehow never quite was.

That said, the power upgrade is really not that important. Even before the power hike the car was at the limit of what it could reasonably be expected to cope with. Far more valuable is what it lacks, which is overwhelming low-down torque in the lower gears. It’s all there, of course, but now sensibly held back by that engine mapping until there’s a better than zero chance of the car actually being able to transmit it to the road. Yes, it will still trigger the traction control in first, second and third gears on a smooth, straight, dry road, but that sense of the car being perpetually reined in by its safety systems has been greatly decreased, even if not entirely eliminated.

It’s better in the corners too: more accurate, more reassuring even though the standard car is hardly treacherous, with better feel too. It’s still more of a GT than an out-and-out sports car like the aforementioned 812, but it’s so much more adept at dealing with its power that mild frustration I always felt when trying to row a DBS along a decent road is now notable only by its absence.

More than anything, it’s what you’re not aware of that counts, principally having to manage the power on a moment-by-moment basis. It gives you freedom to drive the way you want, not the way its limitations command that you must.

But perhaps the best thing about the 770 is that none of that old DBS charm has been lost. Indeed because this is now a more capable, less limited car to drive, its underlying character shines through even more strongly. It’s a car with a feel to it that is perhaps uniquely Aston Martin, and which has been that way since the late 1970s and the introduction of the original V8 Vantage. I drove one a few weeks ago and revelled in the way it combined a slightly but not wildly overpowered engine at one end with a fractionally overworked rear axle driving it at the other. Enough excess to feel truly indulgent, but stopping well short of proving frustrating.

It’s a fine balance to strike and I hope the company finds it again with the car that replaces the DBS, whatever it is called. For that luxuriant sense of just a little more power than a beautiful, capable grand touring car can cope with, without it ever seeming gratuitous of needlessly excessive is, to me, the very essence of Aston Martin.

Aston Martin DBS 770 Ultimate

• Price £314,000
• Engine 5.2 litres, 12 cylinders, petrol, twin turbo
• Power 758bhp at 6500rpm
• Torque 664lb ft at 2000rpm
• Weight 1845kg (DIN)
• Power to weight 411bhp per tonne
• Transmission Eight-speed automatic, rear-wheel drive
• 0-62mph 3.4sec
• Top speed 211mph
• Economy 24.6mpg
• CO2 314g/km
• Verdict A fitting farewell for a DBS.