BMW M340d Touring xDrive assessment: secretly the greatest car or truck BMW can make?

Christel Deskins

Oh, appear on! I believed diesel had been cancelled? It’s true – United kingdom revenue of motors that drink from the black pump have folded more rapidly than a small-sighted UFC contender.  Briefly, diesel occupied a 50 for each cent marketplace share in Britain. Appropriate now, only 14 for each cent of […]

Oh, appear on! I believed diesel had been cancelled?
It’s true – United kingdom revenue of motors that drink from the black pump have folded more rapidly than a small-sighted UFC contender. 
Briefly, diesel occupied a 50 for each cent marketplace share in Britain. Appropriate now, only 14 for each cent of new automobiles bought below are diesels. In 2020, profits freefell by above a third, from an by now dismal 2019.
So… why are you driving a £50k diesel BMW? Why is BMW even building it?
Perfectly, the carmakers chat a great activity. They say diesel isn’t accomplished however. They issue to the very most up-to-date low-friction engines, various emissions filters and exhaust additives, when reminding us that not so pretty extended ago, turbodiesels have been offered as common with a halo. 
Lots of torque for straightforward driving, minimal CO2 for quick tax-evasion, and 700 miles on a tank, if you were mindful. Diesel make perception of significant, large relatives automobiles, vehicles that do prolonged distances on the standard, and automobiles that have to tow leaden trailers. There is no EV, or plug-in hybrid, that features very the very same variety of talents, so considerably of the time. Not nevertheless – in spite of what the government has decided to spout.
That is why Mercedes is tentatively offering diesel-plug-in hybrids. Audi’s S4 and S6 are now TDIs. And then there’s this issue. The humble BMW wagon attempting to defeat Alpina at its own game.
This new BMW M340d could possibly be a curious collector’s item in a long time to come. Just one of the final hurrahs for a meaty diesel engine in a practical car or truck, before the plan receives swept absent in the electrification tsunami. 
What is the spec of this Unicorn TDI?
You’d have to know your stuff to stop up acquiring one of these. Hilariously, BMW will provide you a less costly, less potent 3 Collection run by a diesel straight-6: the 330d. It is obtained 261bhp, 428lb ft and hauls to 62mph in 5.5 seconds. You never actually need a a lot quicker junior exec than that, do you?
And still, in this article it is. The M340d. The twin-stage turbocharged engine has been breathed on, and joined forces with a 48-volt starter-generator motor that provides 11bhp on its very own and fills in any pesky turbo lag. 
The result is 335bhp, and a staggering 700 Newtonmetres of torque. Which is 516lb ft in old funds. Smaller speculate BMW has experienced to entrust generate to all 4 wheels, by way of a fettled 8-velocity automated gearbox. There is even start command, for heaven’s sake. 
Could be a little bit of a Q-motor vehicle unique, then?
I’ll say. Having from -62mph in 4.8 seconds in any relatives estate vehicle is impressive. The way the M340d manages it is just foolish nevertheless. It’s so fuss-free of charge, you arrive at 62mph and it’s anti-climactic, as if the car’s just acquiring into its stride. 
Underneath, this is a fantastically challenging device. The engine is hectic preserving maximum enhance stress anywhere you have obtained the throttle, it is harvesting electrical vitality and juggling the electro-surge, and the exhaust gases are on a magical mystery tour by a sewage procedure works-meets-waterslide, so this rampant runaway diesel locomotive essentially complies with more durable tailpipe exams not actually coming into motion until up coming yr. And nevertheless it’ll even now preserve a Cayman honest.
And but, from inside, you are blissfully unaware of all of this. You just intention and fire. There are modes accessible, but you needn’t hassle toggling them. Bounce on the fuel, the gearbox readies by itself for the onslaught, and you are off. An M3 pilot would even now be hectic selecting his gearshift ferocity menu. The M340d is two, no, make that a few counties away.
Is it a blunt instrument?
Nope, it handles. As with all M Activity 3s, the ride’s fairly taut and active on back streets, even with the optional adaptive suspension locked into Consolation manner. It’s wonderfully managed although. You could load up the loved ones and set off for holiday seasons without having getting to swerve all over potholes or adopt the brace position for drain covers.
If you’re really cracking on, then you’ll operate into the restrictions of entrance-stop grip sooner than you would in a four-cylinder 3 Series – this is a significant lump of engine dangling more than the entrance wheels, soon after all. But that kind of behaviour isn’t what the M340d is about. 
This is a length-crushing, journey-shrinking monster that works by using its monumental muscle mass, not dainty cornering, to get you property substantially quicker than you were expecting.
I hope it’s nonetheless cost-effective, or I’ll just purchase an M340i.
Travel the M340d like a pillock and it’ll do 35mpg. But it simply will not do any significantly less. 35mpg is the baseline. You’d have to drill a hole in the gas tank to make it consume more. 
What is charming is when you’ve concluded overtaking each individual motor vehicle inside your postcode and settle down, the M340d’s financial state skyrockets. Allow the Eco Pro manner to coach you into lifting off nicely ahead of roundabouts or when cresting hills and you’ll common about 40mpg. And if this is your motorway thrust-chariot, it’ll shut in on 50 to the gallon. Just cannot try to remember acquiring that from an M3.
The greatest vehicle BMW would make, you reckon?
In addition to being ‘good’, it’s also neat. So much far more suave than an X2 or a 2 Series Energetic Tourer or an X4 or an X6 or a 6GT or an X7 M50d, but not as flashy as an 8 Gran Coupe. 
And it’ll be rare, which presents it mystique. Just mainly because it’s thoroughly needless, not cheap and probable to offer at the exact same tempo as ‘Best Times of 2020’ sticker album does not necessarily mean the M340d is not just one of BMW’s present day hero cars. 
If this is diesel’s previous hurrah, then we can say it went out on a large, in just one of the finest refined superwagons ever built. 
3.-litre turbodiesel 6cyl
335bhp, 516lb ft
8spd car, AWD
-62mph in 4.8sec, 155mph
48.7 – 52.3 mpg, 153 – 143 g/km CO2
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