Which BMW X5 Generation Holds Up Best? The G05 Makes a Strong Case

Every generation of the BMW X5 has its fans. The original E53 had purity of purpose. The E70 was the first to feel genuinely upscale. The F15 was competent enough to satisfy for years. But if you’re shopping for a used X5 and want one that’s aged well mechanically, the fourth-generation G05 stands apart.

BMW started fresh with the G05, launching it on the CLAR platform shared with the 5 and 7 Series. That means more shared parts, better availability, and more mechanics who know the hardware. The F15 relied heavily on the E70’s bones; the G05 didn’t. It grew in every dimension—longer wheelbase, wider stance—without gaining much weight, thanks to aluminum doors, hood, and fenders.

The real reason to recommend a G05 is the B58 engine. Found in the xDrive40i and sDrive40i, this inline-six replaced the N55 from the previous generation. The N55 had known failure points: camshaft bearing ledge wear, water pump issues. The B58 doesn’t inherit those problems. It’s been proven across millions of vehicles—M240is, Z4s, and more—so parts are easy to find and independent shops know the engine.

For buyers who want a used X5 without crossing their fingers, the B58-powered G05 is the one.

The V8 story is more complicated. The N63 in the pre-LCI M50i is the most reliable version of that engine BMW built, but it’s still an N63—strict about oil and service intervals, expensive when neglected. The facelifted M60i gets the newer S68 V8 with a mild hybrid, but it’s too new to have a reliability track record.

The plug-in hybrid models use the B58 with a battery pack, offering around 40 miles of electric range, but high-voltage battery replacement costs and limited repair options outside dealerships are real considerations.

The G05 also improved the suspension with a five-link rear setup and available four-corner air suspension—a first since the original E53. Towing capacity hit 7,200 pounds. Technology finally caught up, with standard Android Auto and Apple CarPlay from launch, over-the-air updates, and a full suite of driver assists.

For most buyers, the xDrive40i or sDrive40i with the B58 is the straightforward pick. It’s the first X5 generation where the engine, chassis, and technology all moved forward together. Previous generations managed two out of three. This one got all of them.