Autoblog and Yahoo may earn commission from links in this article.A 2018 BMW X5 xDrive50i, the V8-powered version that sits near the top of the F15 X5 range below only the X5 M, this gray over black example shows 74,327 miles. It is listed for sale by Carvana at $24,990, recently reduced from $25,590. The hook is genuine V8 performance in a luxury SUV, though the pricing and this engine's reputation both warrant a close look.2018 BMW X5 xDrive50i CarvanaWhat it's worth right nowThe numbers here point above market. For a 2018 X5 xDrive50i, Kelley Blue Book lists a current resale value of about $19,550 and a trade-in value of $15,200, Cars.com shows a nationwide average of $22,640 with listings starting near $16,395, and JD Power reports an average price paid of $18,930. Edmunds places the top of the entire 2018 X5 used range at about $23,454.AdvertisementAdvertisementAgainst all those reference points, this car's $24,990 asking price sits at or above the market ceiling, and Carvana has not flagged it with a discount badge against book. The mileage is about average for the year, so it is not condition or mileage driving a discount, which means on the data alone, this is priced above where these cars typically trade. A buyer is paying a premium for the convenience and the specific spec rather than getting a value.2018 BMW X5 xDrive50iCondition and detailsThe car is an off-lease, accident-free example per its Carfax, finished in gray over black genuine leather with a strong equipment list, including a Bang and Olufsen surround sound system, a panoramic moonroof, multi-contour seats, four-zone climate control, a head-up display, a 360 camera, and navigation. The single most important consideration on an XDrive50i is the engine.2018 BMW X5 xDrive50iThe 4.4-liter N63 twin-turbo V8 is well known for oil consumption and leaks, valve stem seal issues, and other expensive maintenance items, and owner reviews for this exact model frequently reference those concerns, so a pre-purchase inspection focused on the engine is essential. The listing also notes only one key is included, which is worth factoring in since BMW replacement keys are costly. As always with a used luxury German SUV, a full service history review is the priority before purchase.2018 BMW X5 xDrive50iThe offerSpecificationDetailMakeBMWModelX5 xDrive50i (F15)Year2018Mileage74,327 milesEngine4.4 liter N63 twin turbocharged V8Power445 hp and 480 lb.ft of torqueTransmission8-speed Sport Automatic with SteptronicDrive typexDrive all-wheel-driveExterior colorGrayInterior colorBlack genuine leatherAsking price$24,990Interested in this 2018 BMW X5? View the listing here.What makes the X5 xDrive50i uniqueThe xDrive50i is the V8-powered version of the third-generation F15 X5, positioned near the top of the lineup just below the high-performance X5 M. Its defining feature is the 4.4-liter N63 twin-turbocharged V8, rated at 445 hp and 480 lb.ft, which delivers a 0 to 60 mph time of about 4.7 seconds, genuinely quick for a midsize luxury SUV.2018 BMW X5 xDrive50iAdvertisementAdvertisementPaired with an eight-speed automatic and xDrive all-wheel-drive, it offers effortless performance alongside the X5's luxury and practicality. It is a significant step up in power and cost from the far more common xDrive35i six cylinder, which is why used examples command a premium over the six, but it also brings the higher fuel consumption and more complex, maintenance-intensive V8 that buyers should weigh carefully.My takeThe xDrive50i is a genuinely rapid and refined luxury SUV, and this one is well equipped, clean, and accident-free, which is the appealing side of the story. The reality check is twofold. On price, $24,990 sits above KBB resale, above the national average, and at the top of the used range, so it is priced above market rather than as a deal, and I would place fair value closer to $19,000 to $23,000 for a 74,000-mile example.On mechanicals, the N63 V8 has a well-earned reputation for expensive upkeep, and at this mileage a buyer should budget accordingly. Taken together, I would call this overpriced as listed, and the kind of car where the purchase price is only part of the cost of ownership. My advice is to negotiate against the cheaper comparable examples on the market, insist on a V8-focused inspection, and only proceed if the service history is strong and the price comes down toward book.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.AdvertisementAdvertisementAutoblog aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission.This story was originally published by Autoblog on Jul 8, 2026, where it first appeared in the Car Buying section. Add Autoblog as a Preferred Source by clicking here.