BMW X5 G05 (2018-2024) used buyer’s guide: the year to buy, the engine that holds up, and what to avoid

BMW X5 G05 used buying guide: best year, best engine, common faults to inspect, and what UK premium buyers should pay in 2026.

The X5 G05 in two sentences: 2018 to 2024, two phases

The G05 is the fourth-generation BMW X5, built at Spartanburg, USA from 2018 to 2024 on BMW’s CLAR platform shared with the 7 Series, X6 and X7. The headline mid-cycle refresh (LCI) arrived as a 2024 model year car in late 2023 and changed enough to redefine the used market: split-LED headlights and arrow-shape DRLs, BMW Curved Display with iDrive 8 and OS 8.5, 48V mild-hybrid system on the inline-six diesel and petrol, and a more powerful xDrive50e PHEV with a meaningfully larger battery and longer real-world EV range.

The best year to buy a used BMW X5 G05 in 2026

Three windows make sense at different budgets:

• £28,000 to £36,000: 2020 to 2021 xDrive30d M Sport, 55,000 to 75,000 miles, FBMSH. Pre-LCI but post-shakedown. The B57 inline-six diesel by this point had its early-build software issues resolved; the 8-speed ZF gearbox is bulletproof. M Sport rather than xLine because the M Sport tunes the suspension and gives proper sports seats.
• £36,000 to £44,000: 2022 to early-2023 xDrive45e PHEV (pre-LCI) or xDrive40d M Sport, sub-50,000 miles. The xDrive45e is the pre-LCI PHEV with a smaller 24kWh battery (around 50 miles EV real-world). xDrive40d is a faster 340bhp six-cylinder diesel that holds residuals better than the 30d.
• £44,000 to £55,000: 2023 to 2024 LCI xDrive30d M Sport or xDrive50e M Sport, sub-30,000 miles, BMW Premium Selection. Best-of-G05 territory. The Curved Display and OS 8.5 are step-change upgrades over the pre-LCI cars. The xDrive50e PHEV in LCI form gets a much bigger battery and real-world EV range pushes 50+ miles in mild weather.

Carwow and Auto Trader inventory data from late May 2026 shows BMW Premium Selection cars run a £2,000 to £3,800 premium over equivalent independent dealer stock. For an X5 specifically that premium is worth paying on a sub-£40,000 car because BMW PS bundles a minimum 24 months / unlimited mileage warranty, which is a meaningful safety net for the parts most likely to need attention (air suspension if fitted, infotainment module, charging electronics on PHEV cars). See our Warranty Direct vs MotorEasy vs ALA comparison for the third-party alternative.

X5 G05 engines ranked from buy-with-confidence to skip

1. xDrive30d (3.0 inline-six diesel, 286bhp pre-LCI / 298bhp LCI): the buy. Real-world 32 to 36 mpg on a UK A-road, ZF 8HP gearbox is the most durable component in the powertrain, and the 48V mild-hybrid on LCI cars adds creep-off-the-line smoothness.
2. xDrive40d (340bhp diesel, mid-cycle): a strong second. Same B57 base but with quad-turbo set-up (until simplified later) and noticeably faster overtake. Real-world economy lands close to the 30d (around 30 to 33 mpg) thanks to the eight-speed gearbox.
3. xDrive50e PHEV (LCI from 2023): the right choice for sal-sac and home-charger buyers. Larger battery than the pre-LCI xDrive45e and a real-world 45 to 55 mile EV range in mild weather. P11D is high so this is for higher-rate taxpayers; see our BMW iX sal-sac math for context.
4. xDrive45e PHEV (pre-LCI): usable if the price is right but the 24kWh battery makes the real-world EV range marginal at 40 miles.
5. xDrive40i (3.0 inline-six petrol, 333bhp): fine but the wrong choice for the UK use-case. Real-world economy below 27 mpg, ULEZ-compliant but VED hits hard. Buy only if you have a specific reason not to take a diesel.
6. M50i / M60i V8: a hoot, but a 530bhp twin-turbo V8 in a 2.4-tonne SUV is a fuel-and-tyre tax that lands a £900/month bill before you have done anything. Skip unless you have a specific track-day or towing use-case.
7. X5 M Competition: a separate market entirely. Mechanically tough but resale is volatile and insurance is group 50.

Common faults to inspect before you sign

• Air suspension (optional two-axle): not every X5 G05 has it, so check the V5C. On cars that do, look for uneven resting height and listen for the compressor on chassis-raise. Front air-strut failures are documented past 60,000 miles. Strut replacement is £900 to £1,300 at an independent BMW specialist.
• iDrive infotainment: pre-LCI cars run iDrive 7. LCI runs iDrive 8 / OS 8.5 on the BMW Curved Display. Test CarPlay (wireless), reverse camera and Surround View 3D on the test drive. The Curved Display has its own learning curve but is hardware-stable.
• Front lower control arm bushes: clunk on slow-speed pothole hits. Common at 50,000 to 70,000 miles. £450 to £700 to replace at an independent BMW specialist.
• Battery and 48V system: on LCI cars with mild-hybrid, the 48V battery is a serviceable item. On the xDrive50e PHEV, ensure the high-voltage traction battery has a state-of-health printout from the most recent service.
• EGR and AdBlue (diesels): standard inspection items. The X5 G05 has been the subject of EGR-related recalls historically. Check the AdBlue tank level warning logic on the dashboard.
• Brakes: the X5 G05 is heavy and eats front pads. Budget £400 to £550 every 30,000 miles at an independent BMW specialist.

X5 G05 vs Audi Q7 4M vs Range Rover Velar L560

The honest cross-shop list for a £30,000 to £45,000 P1 buyer is the X5 G05, the Audi Q7 4M (covered in our Audi Q7 4M common faults guide), the Range Rover Velar L560 (see our Velar used reliability guide) and to a lesser extent the Mercedes GLE W167. On purchase price the X5 G05 lands marginally above the Q7 4M and £3,000 to £6,000 below an equivalent Velar at the same age and miles. On running cost, the X5 G05 is the best of the four on real-world fuel economy thanks to the B57 diesel and the lightest service intervals; the Velar costs the most to fix when it does go wrong, and the GLE sits in between.

Our take

For a UK premium used buyer in 2026 the right X5 G05 is a 2023 to 2024 LCI xDrive30d M Sport on BMW Premium Selection, sub-30,000 miles, in a sensible colour with iDrive 8.5, Adaptive 2-Axle Air Suspension if you can find it, and the optional 21-inch (not 22-inch) wheels. Budget £44,000 to £52,000. That car gives you the curved display, the 48V mild-hybrid, fresh PS warranty cover and a depreciation curve that has flattened enough to make resale predictable. If your budget tops out at £35,000, take a 2020 to 2021 xDrive30d M Sport from a BMW main dealer (not an unfranchised independent), insist on full BMW main-dealer service history, and walk away if the seller cannot show the most recent ZF gearbox oil change or AdBlue history. The X5 G05 remains the most rational large premium SUV used buy in this segment; the only better real-world buy is a Lexus RX, and that comes at a hybrid-only refinement cost on motorways.

Related reading on CDE

• Audi Q7 4M common faults at 60-80k miles
• Range Rover Velar L560 used reliability guide
• BMW 5 Series G30 used buyer’s guide