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Bentley to retire aging 6.75-liter V8 with current Mulsanne

The massive 6.75-liter V8 in the Bentley Mulsanne is one of the oldest engines still in production. But it may not be around for much longer. According to Car and Driver, Bentley intends to finally put the big old pushrod V8 to pasture once the current Mulsanne is phased out, thus putting an end to a saga that goes back some 57 years. Powerful as it may be, ever-stricter exhaust emissions and fuel-consumption regulations will see that the L Series V8, originally introduced way back in 1957, doesn't stay in production forever. Whenever the Mulsanne is replaced, it will reportedly get a brand-new twelve-cylinder engine. Bentley is currently the world's largest producer of dozen-pot powerplants. Production of the British automaker's 6.0-liter twin-turbo W12 far outpaces anything from Rolls-Royce, Mercedes-Benz, BMW, Ferrari, or Lamborghini. Over the decades since its introduction, Bentley's long-serving V8 has gone from making an "adequate" amount of power and torque to an impressive 530 horsepower and a positively massive 811 pound-feet (with the help of a couple of turbochargers). Its eventual discontinuation wouldn't be the first attempt on the life of the 6.75-liter engine. When BMW briefly took control of both Rolls and Bentley, it replaced the big engine by a smaller 4.4-liter V8. Customer demand led Bentley to bring the old engine back. It will likely be some time before we get details of Bentley's next powerplant. Models like the Mulsanne and Rolls-Royce Phantom tend to stick around for a long time, and the latest version of Bentley's flagship was just released earlier this year. Related Video:

Check out King Charles III's $17.6 million car collection

King Charles III's coronation will take place in England on May 6, and being crowned a monarch comes with a long list of perks with four wheels. He will gain full access to the Royal Family's fleet of cars, which is valued at about GBP14 million (approximately $17.6 million). The two most expensive cars in the collection are nearly identical: they're a pair of Bentley State Limousine models (pictured) built for Queen Elizabeth II, King Charles III's mother, in 2002. Only two units were made, and they're both part of the Royal Family's fleet, so they're difficult to put a value on; it's not like one is going to end up listed on your favorite auction site anytime soon. British company Nationwide Vehicle Contracts, which compiled the list, estimates that each armored, 245-inch long sedan is worth at least GBP10,000,000 (roughly $12.6 million). Dropping below the eight-digit threshold, the second-most-valuable car in the Royal Family's fleet isn't really a car. It's the Gold State Coach, which Matchbox recently released a 1/64-scale replica of, and its value is estimated at GBP1.6 million (about $2 million). At 275 inches long it's even bigger than the Bentley limousine and it weighs about 9,000 pounds. It's 261 years old and designed to be pulled by eight horses, and has been part of every coronation since 1831. The rest of the Royal Family's vehicles are relatively mundane. There's a 1965 Aston Martin DB6 Volante that Queen Elizabeth II and her husband, Prince Phillip, bought for King Charles III on his 21st birthday. It's worth GBP1 million (about $1.2 million). The collection also includes a Rolls-Royce Phantom VI (about $627,000), a Bentley Bentayga (about $201,000), a Land Rover Range Rover long-wheelbase Landaulet ($133,000), a Jaguar XE (about $41,000), and a Land Rover Defender ($38,000). "Luxury cars have long been associated with the monarch and King Charles III, in particular, is known for his fondness of motor vehicles. His impressive collection features sentimental value with motors passed down from his late mother, Queen Elizabeth II, to cars bought for him by his parents," explained Keith Hawes, the director of Nationwide Vehicle Contracts, in an interview with CBS News. Being at the head of a car-making nation's royal family also comes with drawbacks: Every vehicle in King Charles III's fleet is British.

VW announces reworked 6.0 W12 TSI engine

Nobody makes more engines with a dozen cylinders than the Volkswagen Group. They're W12s, of course, owing to the novel shape of their cylinder banks. Now the German industrial giant has announced a comprehensively reworked version of that engine at the same Vienna Motor Symposium where it presented its new 2.0-liter turbo four. The new W12 retains the same arrangement and the same 6.0-liter displacement, but updates it all with the latest powertrain tech. In place of Audi's FSI direct injection and Bentley's TMPI multi-point injection, the engine has adopted a new TSI system. It's also got a pair of new twin-scroll turbochargers, APS-coated cylinders, a new cooling system, active engine mounts, cylinder deactivation, and a stop/start system. And – crucially for application in the upcoming Bentayga – it has an oil circuit designed for off-road use. The revised package now produces 600 horsepower and 664 pound-feet of torque. Considerably more than the 567 hp and 516 lb-ft offered in the Bentley Continental GT W12, but less than the GT Speed, which we suspect will get an even more powerful version of this new engine. It's also more powerful than even the top version of Audi and Bentley's 4.0-liter twin-turbo V8, to make the W12 a more compelling option. Of course that's just as far as the Continental GT is concerned. The W12 has also found use in the Continental GTC and Flying Spur, as well as the Volkswagen Phaeton and Audi A8, and could find further applications under the Flying B emblem and elsewhere in the future. VW says that in the right application (say, in the production version of the Bentley EXP 10 Speed 6 concept, for example), the new twelve-pot could deliver 0-62 times of under four seconds and a top speed in excess of 186 miles per hour. Volkswagen at the 36th International Vienna Motor Symposium Dr. Heinz-Jakob Neusser: "The car of the future will continue to fascinate people" - CO2 reduction, electromobility and digitalisation are the greatest challenges facing the automotive industry - The future of the internal combustion engine will be characterised by high rpm diesel and high-performance three-cylinder TSI engines - Laser roughening – innovative coating process in large-scale production - New 6.0 W12 TSI with 447 kW (608 PS) – performance and refinement - New generation of EU6 TDI engines for light-duty vehicles Dr.