Used BMW X5 (G05) Buyer's Guide: What to Check Before Buying

A used BMW X5 from the G05 generation (2019 onward) is one of the most complete midsize luxury SUVs you can buy secondhand: quiet, quick, comfortable and loaded with technology. The sDrive40i version adds a rear-wheel-drive layout that suits Southern California's mostly dry roads.

The flip side of all that technology is that there's more to check. A good used X5 has documented maintenance, working electronics and tires and brakes that won't need immediate attention. This guide walks through what matters on a G05, using the 2021 X5 sDrive40i we list in Irvine as a reference.

The G05 X5 at a glance

The G05 replaced the previous X5 for the 2019 model year. Key facts for used shoppers:

• sDrive40i: rear-wheel drive with the B58 3.0-liter turbocharged inline-6.
• xDrive40i: the same engine with all-wheel drive.
• Other versions: higher-performance and plug-in hybrid variants exist; their maintenance needs differ, so check by VIN.
• Seating: two rows are standard; an optional third row was offered on some X5s, so confirm what a specific car has.

The 2021 BMW X5 sDrive40i we list shows 91,493 miles and is the RWD version.

sDrive vs. xDrive: does RWD make sense in Orange County?

For most Orange County drivers, yes. Rear-wheel drive handles daily commuting, freeway driving and coastal routes without trouble, and it removes the front differential and transfer case that AWD adds. You may notice slightly different handling and weight distribution as well.

Choose xDrive instead if you regularly drive to mountain areas in winter, tow, or simply want the extra traction in heavy rain. If you're unsure, our hub on the best used SUVs and trucks in Orange County compares drivetrain options across models.

Engine and drivetrain checks

The B58 inline-6 has a strong reputation, but every turbocharged engine needs consistent maintenance. On a used X5:

1. Review oil-change history. Look for regular service in the records or CARFAX, not just the maximum intervals.
2. Look for leaks. Gaskets and seals age with heat cycles. Have an inspector check under the car and around the engine.
3. Check the cooling system. Turbo engines run hot, and Southern California summers add stress. Look for coolant residue or warnings.
4. Feel the transmission. The X5 uses an 8-speed automatic. Shifts should be smooth and quick, with no flare or harsh engagement.
5. Scan for codes. A BMW-capable scan tool can reveal stored faults that don't show as warning lights.

Electronics and features

A G05 X5 has a lot of systems to test. Spend 15 minutes going through them:

• iDrive screen, navigation, phone pairing and voice control.
• Cameras, parking sensors and any driver-assist features listed on the car.
• Power seats, memory settings, heated or ventilated seats if equipped.
• Climate zones and the A/C on a hot day.
• Power tailgate, panoramic roof if equipped, and all windows.
• Key fobs: confirm how many come with the car.

Ask whether software updates have been done at a BMW dealer, and check open recalls by VIN at nhtsa.gov/recalls.

Suspension, tires and brakes

Some X5s have optional air suspension or adaptive dampers. If equipped, check that ride height is even when parked and no suspension warnings appear.

Tires deserve close attention. Check:

• Tread depth on all four tires.
• Whether the tires are run-flats, and whether the car has a spare or inflation kit.
• Staggered sizing (different front and rear widths), which limits rotation and affects replacement cost.
• Uneven wear that could indicate alignment problems.

Brake pads and rotors wear faster on a heavy SUV. An inspector can measure what's left.

Warranty and maintenance status

At 91,493 miles, a 2021 X5 is likely beyond its original factory warranty and any complimentary scheduled maintenance BMW offered when new, both of which had mileage limits. Confirm coverage with a BMW dealer using the VIN. That makes an independent pre-purchase inspection especially valuable; our vehicle history and inspection guide shows how to set one up.

Some buyers consider an extended service contract. If you do, read the coverage terms carefully; our guide to used car warranties and service contracts explains what to look for. We don't sell warranties.

California ownership notes

• Smog: A 2021 model is more than four model years old in 2026, so a smog certificate is required at transfer; the seller provides it, and every car we sell is smog checked before sale. At renewal, gas vehicles in their first eight model years pay a smog abatement fee instead of an inspection.
• Tax: In Irvine and Newport Beach, the sales or use tax rate is 7.75% as of October 1, 2026; Santa Ana is 9.25%. Rates change; check CDTFA's lookup.
• Sun care: Leather, dashboards and trim can suffer from UV exposure. A sunshade and garage parking help.
• Insurance: get a quote by VIN before buying, since luxury SUV repair costs vary.

Frequently asked questions

Is a used BMW X5 reliable?

We don't publish reliability scores. The G05's B58 engine is widely respected, but a specific X5's condition depends on how it was maintained. Prioritize service records and an independent inspection.

What are common things to check on a 2021 BMW X5?

Focus on oil-change history, leaks, cooling system condition, transmission behavior, electronics, tires and brakes. Also check open recalls by VIN and ask whether software updates are current.

Is an X5 with over 90,000 miles worth buying?

It can be, if maintenance is documented and an inspection finds no major issues. Expect to budget for tires, brakes and age-related items, and assume factory coverage has ended unless BMW confirms otherwise.

Does the X5 sDrive40i have a third row?

Some G05 X5s were ordered with an optional third row, but many weren't. Check the specific car and its build data.

Will a used X5 need a smog check every two years in Orange County?

Once it's past its first eight model years, yes. Until then, you pay a smog abatement fee at renewal instead.

See the X5 in Irvine

If you want a sportier, smaller SUV, the used Porsche Macan S buyer's guide is worth reading. If you need seven seats as standard, look at the Land Rover Discovery or Mercedes GL. Our used luxury SUV buyer's guide compares all four brands.

Browse our Irvine used cars, request the CARFAX for the X5, and arrange an independent inspection. Call or text (516) 835-6141 to book a test drive in Irvine.