The BMW X5 Mk4, launched in 2018, stands out as a premium midsize SUV that masterfully blends athletic driving characteristics with family-friendly utility and high-end comfort. This generation elevates the X5’s reputation by prioritizing refinement while retaining BMW’s signature sporty edge, making it an appealing option on the used market today.
Overview of the Fourth-Generation X5
Introduced as the fourth iteration of BMW’s popular X5 lineup, the Mk4 model arrived in 2018 with significant updates over its predecessor. It features a bolder exterior design, enhanced interior technology, and a broader range of powertrains, including efficient diesels, potent petrol units, and plug-in hybrids. Buyers appreciate its balance of luxury and performance, positioning it as a benchmark in the luxury SUV segment.
Standard equipment across trims is generous, starting with features like adaptive suspension, LED lighting, advanced navigation, and heated power-adjustable seats. Higher trims add larger wheels, sportier styling, and premium audio systems. The X5’s chassis tuning ensures it handles like a sports car despite its size, thanks to options like air suspension and integral active steering.
Engine Options and Performance
The Mk4 X5 offers diverse powertrains to suit various preferences, from efficiency-focused commuters to performance enthusiasts.
- xDrive30d: A 3.0-liter diesel delivering around 265 hp, praised for torque-rich acceleration and strong fuel economy, ideal for long-distance travel.
- xDrive40i: Turbocharged 3.0-liter petrol with 335 hp, providing smooth power delivery and responsive handling.
- M50d: Top diesel quad-turbo 400 hp variant for explosive performance.
- xDrive45e PHEV: Plug-in hybrid combining a 3.0-liter engine with electric motors for up to 50 miles of electric range.
- X5 M Competition: 617 hp V8 beast for ultimate speed.
Performance shines across the board, with 0-62 mph times from 5.5 seconds in base models to under 4 seconds in M variants. The ZF eight-speed automatic transmission shifts seamlessly, and xDrive all-wheel drive enhances traction. Owners report excellent highway merging and spirited driving, though fuel thirst increases in sport mode.
Exterior Design and Practicality
The X5 Mk4 boasts a muscular stance with a large kidney grille, sharp LED headlights, and sculpted lines that convey premium athleticism. Wheel sizes range from 19 to 22 inches, with M Sport models featuring aggressive bumpers and dark trim.
Dimensions provide ample presence: length around 4.9 meters, width 2 meters, offering good road presence without excessive bulk. Aerodynamic efficiency aids fuel economy, and the powered tailgate simplifies loading.
Interior Comfort and Space
Inside, the X5 delivers class-leading ergonomics with high-quality materials like leather, wood, and metal accents. The cabin feels airy and upscale, with supportive sports seats that adjust electrically and offer heating/ventilation.
Space is generous for five adults, with ample legroom and headroom front and rear. Optional seven-seat configuration suits families, though third-row seats best fit children due to limited space. Boot capacity impresses at 650 liters with seats up, expanding to 1,870 liters folded, surpassing many rivals.
| Seating Configuration | Cargo Volume (liters) |
|---|---|
| 5 seats (upright) | 650 |
| 5 seats (folded) | 1,870 |
| 7 seats (upright) | 300 |
Infotainment centers on a 12.3-inch touchscreen with iDrive 7.0, supporting Apple CarPlay, wireless charging, and gesture controls. Sound systems range from standard 10-speaker setups to optional Bowers & Wilkins 20-speaker units.
Driving Experience and Handling
BMW’s engineering ensures the X5 drives engagingly. Adaptive air suspension smooths bumps while maintaining composure in corners. Dynamic Handling packages add rear-wheel steering for agility.
Owners highlight quiet cabins, precise steering, and confident braking. Diesel models excel in refinement, petrol units in responsiveness. Edmunds rates driving dynamics at 9.0/10.
Technology and Safety Features
Advanced driver aids include adaptive cruise control, lane-keeping assist, blind-spot monitoring, and parking sensors. Night vision and surround cameras are available.
The 2018 model introduced touchscreen iDrive, paddle shifters, and safety warnings like forward collision alerts. Reliability for these systems is generally good, though some note minor infotainment glitches.
Reliability and Ownership Costs
Mixed owner feedback exists. Driver Power surveys placed the X5 low initially (70th/75), citing issues with reliability, costs, and comfort. However, many report trouble-free ownership, with one owner noting zero issues after 47,000 miles. RepairPal scores it 2.5/5, average for luxury SUVs.
Annual costs average $1,200-$1,500 for maintenance. Warranty covers 4 years/50,000 miles. Fuel economy: 25-30 mpg combined for diesels, 20-21 for petrol. Kelley Blue Book shows 80% recommendation rate.
Buying Advice for Used Models
Target 2019+ facelifts for updated tech. Check service history, as BMWs thrive on maintenance. Avoid high-mileage without records. Budget £30,000-£60,000 depending on spec. Inspect suspension, electronics, and turbo health.
- Pros: Engaging drive, luxurious interior, versatile space.
- Cons: High running costs, mixed reliability, firm ride on run-flats.
Trims and Pricing Comparison
| Trim | Key Features | Used Price Range (2026 est.) |
|---|---|---|
| xLine | 19″ wheels, air suspension, nav | £28,000-£35,000 |
| M Sport | 20″ wheels, sport styling | £32,000-£45,000 |
| M50i | V8 power, premium packs | £50,000+ |
Owner Experiences
Positive reviews dominate: “Nicest car I’ve driven, great tech and power”. “Rock solid, reliable after years”. Some critique fuel economy and minor squeaks. Winter tires recommended for cold climates.
Alternatives to Consider
- Audi Q7: More seats, tech-focused.
- Mercedes GLE: Plush comfort.
- Porsche Cayenne: Sharper handling.
- Range Rover Sport: Ultimate luxury.
Frequently Asked Questions (FAQs)
Is the 2018 BMW X5 reliable?
Opinions vary; many owners report high reliability, but surveys note average scores. Regular servicing is key.
What’s the fuel economy like?
Diesels achieve 30+ mpg, petrol around 21 mpg combined.
Should I get the seven-seater?
Yes for occasional use, but third row is tight for adults.
How does it compare to the previous generation?
Mk4 offers better tech, refinement, and space.
Common problems to watch for?
Electronics, suspension wear, and diesel emissions systems.
This guide equips you to make an informed decision on a used BMW X5 Mk4, a vehicle that continues to impress with its all-around capabilities.
References
- Used BMW X5 (Mk4, 2018-date) review — Auto Express. 2023. https://www.autoexpress.co.uk/bmw/x5/356632/used-bmw-x5-mk4-2018-date-review
- 2018 BMW X5 Consumer Reviews — Cars.com. 2023. https://www.cars.com/research/bmw-x5-2018/consumer-reviews/?page=6
- Used 2018 BMW X5 SUV Consumer Reviews — Edmunds. 2023. https://www.edmunds.com/bmw/x5/2018/suv/consumer-reviews/
- 2018 BMW X5 Review – How’d this luxury SUV hold up? — YouTube (CarJuice). 2023.
- 2018 BMW X5 Review & Ratings — Edmunds. 2023. https://www.edmunds.com/bmw/x5/2018/review/
- 2018 BMW X5 Consumer Reviews & Ratings — Kelley Blue Book. 2023. https://www.kbb.com/bmw/x5/2018/consumer-reviews/
- Tested: 2018 BMW X5 xDrive35i — Car and Driver. 2018-07-11. https://www.caranddriver.com/reviews/a20159288/2018-bmw-x5-xdrive35i-instrumented-test/