Autoblog and Yahoo may earn commission from links in this article.A 2021 Bentley Bentayga Speed, the range-topping, W12-powered version of Bentley's ultra luxury SUV, this black-on-black example shows 30,749 miles. It is offered for sale by a California dealer as a classified ad at a fixed price of $129,993. The hook is the twin-turbocharged W12, the fastest and most powerful Bentayga of its era, now available at roughly half what it cost new.2021 Bentley Bentayga SpeedeBayWhat it's worth right nowAccording to Kelley Blue Book, the 2021 Bentayga Speed has a fair purchase value starting around $126,000, while Cars.com reports a nationwide average of $143,208 for the Speed with listings starting near $112,999, and Edmunds places the broader 2021 Bentayga range between about $66,991 and $123,066. Against that data, the $129,993 asking price sits within the market, just above the KBB fair figure and comfortably below the Cars.com Speed average, which makes it a reasonable retail price rather than a bargain or an overreach.2021 Bentley Bentayga SpeedeBayThe more striking context is depreciation, since the Speed carried an original MSRP around $245,000 and often well over $300,000 as optioned, so this represents roughly half off the new price in about five years. That steep drop is normal for the segment and is exactly where the value argument lives for a used ultra luxury SUV.Condition and detailsThe car is a dealer offering with a clean title and an AutoCheck history showing 41 records, finished in black over a black interior with the Speed's specific equipment. The selling dealer has strong feedback, though a modest sales history on the platform. As with any used Bentley, the purchase price is only part of the equation, and owner feedback consistently notes that while these are magnificent to drive, they are expensive to maintain, with routine service, tires, brakes, and air suspension components all carrying luxury tier costs. At just over 30,000 miles, this Bentayga is still young, but a buyer should budget accordingly and treat a pre-purchase inspection by a marque specialist and a full service history review as essential before committing. Confirming the specific options fitted is also worthwhile, since the Bentayga's extensive personalization heavily influences both appeal and value.2021 Bentley Bentayga SpeedeBayThe offerSpecificationDetailMakeBentleyModelBentayga SpeedYear2021Mileage30,749 milesEngine6.0 liter twin turbocharged W12Power626 hp and 664 lb.ft of torqueTransmission8-speed automaticDrive type6.0-liter twin-turbocharged W12Exterior colorBlackInterior colorBlackAsking price$129,993Interested in this 2021 Bentley Bentayga Speed? View the listing here.What makes the Bentayga Speed uniqueThe Bentayga Speed sits at the top of the Bentayga range, distinguished by its 6.0-liter twin turbocharged W12, an engine unique to Bentley and its Volkswagen Group siblings that arranges twelve cylinders in a compact W configuration. In the Speed, it produces 626 hp and 664 lb.ft, enough to launch this near three-ton SUV to 60 mph in around 3.8 seconds and on to a top speed of 190 mph, which made it among the fastest SUVs in the world at launch.2021 Bentley Bentayga SpeedeBayAdvertisementAdvertisementBeyond the powertrain, the Speed adds sport-tuned air suspension, specific wheels and trim, and Bentley's hallmark hand-finished cabin with near limitless customization. The W12 also carries added significance now, as Bentley has confirmed it is retiring the engine as it moves toward electrification, which gives W12-powered cars like this a degree of end-of-an-era collectibility that the V8 models do not share.My takeThe Bentayga Speed is a genuinely special machine, combining supercar pace with Bentley's craftsmanship and the increasingly rare W12, and at $129,993, it is priced fairly for the current market, sitting near book and below the average Speed asking price. For a delivery of this caliber, I would put fair value in the $120,000 to $140,000 range for a clean, moderate mileage example, so this is a sensible number rather than a steal, with the real story being how much car your money buys relative to the original sticker. The essential caveat is running costs, because Bentley ownership is expensive and deferred maintenance on one of these can erase any perceived savings quickly, so my advice is to buy on condition and service history rather than price alone, insist on a specialist inspection, and go in with a maintenance budget. Do that, and the retiring W12 makes this one of the more compelling ways into a modern Bentley.Disclaimer: This post is for informational purposes only. We are not a dealership or broker. All vehicle specifications, pricing, and availability are subject to change without notice. We are not responsible for typographical errors, omissions, or the accuracy of the provided information. Please verify all details directly with the seller.Autoblog aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission.AdvertisementAdvertisementThis story was originally published by Autoblog on Jul 9, 2026, where it first appeared in the Car Buying section. Add Autoblog as a Preferred Source by clicking here.