Used BMW X4 (2018+) Buyer’s Guide: 5 Essential Checks

The BMW X4 Mk2, launched in 2018, blends the practicality of an SUV with the flair of a coupe, making it a compelling choice on the used market. Built on the same platform as the X3, it delivers sharper handling and a more engaging drive while retaining family-friendly features. Ideal for buyers seeking style without sacrificing usability, this model stands out for its refined engines and high-quality interior.

Model Background and Evolution

Debuting in early 2018, the second-generation X4 arrived as BMW’s answer to demands for a sleeker crossover. Initial offerings included the efficient xDrive20d with a 2.0-litre diesel producing 187bhp, paired with the more potent xDrive30d’s 3.0-litre six-cylinder diesel at 261bhp. Performance variants like the petrol M40i (355bhp) and diesel M40d (321bhp) catered to enthusiasts craving power.

Over the years, updates refined the lineup, with mild-hybrid tech added to newer diesels for better efficiency. The X4’s design emphasizes aerodynamics and aggression, featuring a fastback roofline that sets it apart from boxier rivals. Despite its sporty profile, it maintains five seats and a liftback tailgate for versatility.

Available Trims and Standard Features

Buyers have three main trim levels: Sport, M Sport, and M Sport X. The entry-level Sport includes 18-inch alloy wheels, adaptive LED headlights, three-zone automatic climate control, parking sensors front and rear, a rearview camera, heated front seats, an 8.8-inch infotainment screen, and an electric tailgate—generous kit for a used premium SUV.

Stepping up to M Sport brings 19-inch wheels, sports seats, a body styling kit, and a larger 12.3-inch touchscreen. The top M Sport X adds a panoramic sunroof and high-beam assist. Options like adaptive cruise control, 360-degree cameras, wireless charging, and a heated steering wheel allow personalization.

Engine Options and Performance

Diesel engines dominate for efficiency, with the xDrive20d offering solid torque for overtaking and combined economy around 45-50mpg in real-world tests. The xDrive30d provides smoother power delivery via its inline-six. Petrol fans opt for the M40i, blending 355bhp with 0-62mph in 4.8 seconds, while the M40d diesel matches thrill with 321bhp.

• xDrive20d: 2.0L diesel, 187bhp, efficient daily driver.
• xDrive30d: 3.0L diesel, 261bhp, refined cruising.
• M40i: 3.0L petrol, 355bhp, high-performance petrol option.
• M40d: 3.0L diesel, 321bhp, torquey flagship diesel.

All models use xDrive all-wheel drive for excellent traction, praised in wet and snowy conditions. Fuel economy varies: petrols achieve 25-28mpg highway, diesels up to 50mpg combined.

Driving Experience and Ride Quality

The X4 shines on twisty roads, with recalibrated suspension delivering precise steering and minimal body roll. It’s more agile than the X3, though the ride can feel firm on M Sport models with run-flat tyres. Owners report confident handling in adverse weather thanks to xDrive.

Highway stability is excellent, and the cabin remains composed at speed. While not as plush as some rivals, the balance of comfort and sportiness appeals to enthusiasts. Consumer feedback highlights smooth rides and refined dynamics, even transitioning from luxury sedans.

Interior Comfort and Practicality

The dashboard mirrors the X3’s logical layout, combining physical controls with a responsive touchscreen. Materials feel premium, with supportive front seats offering ample adjustment. Rear space is adequate for adults on shorter trips, but the sloping roofline limits headroom compared to the X3.

Boot capacity measures 525 litres with seats up (expandable to 1,430 litres), suitable for groceries or weekend luggage, though less than boxier SUVs. A space-saver spare fits under the floor on Sport models.

Key Checks Before Buying

Inspect the fuel tank: 68 litres on Sport, 59 litres on higher trims. Verify tyres—M Sport uses run-flats, which can be pricier to replace. Check for optional towbar (2,000kg braked capacity across all).

• Run a vehicle history report for accidents or service gaps.
• Examine exterior paint for kerb rash on alloys; interior for wear on sports seats.
• Test all electronics: infotainment, cameras, driver aids.
• Listen for unusual engine noises; check service records for Condition-Based Servicing.
• Professional inspection recommended for suspension and xDrive components.

Ownership Expenses and Reliability

BMW’s Condition-Based Servicing analyzes usage to schedule maintenance—oil changes every ~16,000 miles cost £245-£270. Full services with filters run £440-£480. Brake fluid every two years after initial three (£62). Chain-driven engines and lifetime coolant reduce long-term costs.

Used prices start around $19,000 for base models, up to $20,000+ for M40i. Fuel costs are reasonable for diesels (9-11L/100km). Reliability is average; watch for electronics glitches. Expert ratings note high running costs but praise handling and build quality.

Pros and Cons at a Glance

Frequently Asked Questions (FAQs)

Is the BMW X4 reliable?

Average reliability per expert ratings, with strong engines but potential electronics issues. Regular servicing is key.

What’s the boot space like?

525 litres seats up, 1,430 litres folded—practical but less than X3.

Are there common problems?

Watch for run-flat tyre wear, suspension firmness, and infotainment glitches. Diesels are robust.

How fuel-efficient is it?

Diesels: 45-50mpg combined; petrols: 25-28mpg highway.

Can it tow?

Yes, 2,000kg braked with optional towbar.

Final Buying Tips

Prioritize full service history and low-mileage examples under M Sport for value. Test drive to assess ride firmness. The X4 offers premium thrills at used prices, making it a smart pick over newer rivals.