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Bentley builds its final 6.75-liter V8, ending a 61-year production run

Bentley has just finished its very last 6.75-liter V8. While engines come and go, this is significant because Bentley has been building this engine, known as the L-series, for 61 years. This final engine will go in the 30th and last Bentley Mulsanne, a 6.75 Edition by Mulliner, marking the end of the flagship sedan. The L-series engine was first introduced in 1959, and according to Bentley, it was developed in order to develop more power than its existing inline-six without adding weight or taking up more space. The engine in fact weighed 30 pounds less than the six-cylinder, and it made about 180 horsepower. That original engine "only" had 6.2-liters of displacement, and it wasn't until 1971 that it would reach 6.75 liters thanks to increased stroke. This final version of the engine is significantly different from its fuel injection to its twin-turbochargers, but is based on the same design. And with 530 horsepower and 811 pound-feet of torque, it's the most powerful iteration of the engine. At 61 years, the Bentley engine is arguably the V8 with the longest production run. While the first-generation Chevy small block V8 was introduced earlier for the 1955 model year and is still built in crate engine form, GM stopped using it in production cars in 2002. Far fewer Bentley engines were built, though, with a total over 36,000, as opposed to the millions of Chevy small blocks in the world. Of course, volume is sort of the antithesis of what makes a Bentley a Bentley. With the 6.75-liter engine out of production, all of Bentley's engines are derived from VW Group engines, from its W12 to the plug-in hybrid V6. Related Video:    

Bentley plotting Mulsanne performance model for Paris debut

Between three distinct body styles and numerous engine specifications, Bentley has made more versions of the Continental over the years than we would care to count. But one thing it has, by and (very) large left alone is the Mulsanne. Sure, it's done some special editions and some extra equipment packages - it's even toyed with the idea of a two-door convertible version - but at the end of the day, the Mulsanne soldiers on as a four-door sedan with one engine and one engine alone. That may be about to change, however.
Fueled by ambiguous pronouncements from Bentley's returning chief Wolfgang Dürheimer, rumors from the UK suggest that the Flying B marque is preparing a more performance-focused version of the Mulsanne to debut at the Paris Motor Show this October.
Details are few and far between, but we'd expect the Mulsanne's long-serving 6.75-liter V8 engine to be further tuned beyond its current specification of 505 horsepower and 752 pound-feet of torque, accompanied by a stiffer suspension, bigger brakes and other upgrades. Historically Bentley would turbocharge the Mulsanne's predecessors (to turn the 90s-era Brooklands, for instance, into the Turbo R), but the Mulsanne's engine is already spooled up, so the British automaker will likely have to massage the extra muscle out another way.

Bentley Bentayga may spawn sportier fastback version

In the past few years, Bentley has shown us two different conceptions about what its future might look like in: the SUV that started life as the EXP 9 F concept and has now entered production as the Bentayga, and the EXP 10 Speed 6 concept that previews a future sports coupe from the stoic British marque. The next step is an SUV that combines a little of each of them. According to Automotive News, engineers and designers in Crewe are currently laying the groundwork for a crossover that would blend the tall form of the Bentayga with the roofline of the Speed 6. The result would be similar in form, we'd imagine, to the likes of the BMW X6 and Mercedes GLE Coupe, only even further upscale. We wouldn't be surprised to see more changes than the roofline and tail section, either, with a sportier front end and more avant-garde headlights (like those we saw on the Speed 6 concept) giving it a sportier, less stodgy appearance all around – and maybe, just maybe, a different nameplate. CEO Wolfgang Durheimer wants to get the fastbacked Bentayga variant ready by 2018 or 2019 – right around the time that Rolls-Royce, Aston Martin, Maserati, and Lamborghini will be rolling out their debut crossovers. By that time, Bentley will have already have had the Bentayga on the market for two or three years, and wants to be ready to fight off the onslaught with something fresh. "Imagine the EXP 10 as an SUV. It doesn't look 'old Bentley, Durheimer told AN. "The Bentayga doesn't stop us from dreaming and looking down the road. The more success we have with it, the more we can take the best of it and run with it." Proceeding with the project will require Durheimer to get approval from the Volkswagen Group head office in Wolfsburg, but the business case seems like a slam dunk. The model would help Bentley (and VW) further capitalize on the $1 billion it already spent developing the Bentayga, following a successful business model laid out by rival BMW and which Germany's other automakers are quickly learning to emulate. This wouldn't be the first time he'd be seeking approval from Matthias Muller on such a project, either. Durheimer successfully ushered the Cayenne into production when he was head of R&D at Porsche and Muller was the brand's CEO.