The BMW X5 and BMW X6 are two of the best luxury SUVs you can buy. The X5, now in its fourth generation, stands as a high-end and very capable large SUV that's not only spacious but also a pleasure to drive. It competes with a lineup of upmarket SUVs like the Volvo XC90, Range Rover Velar, Audi Q7, and Mercedes-Benz GLE. In this comparison, however, it's up against its sibling, the X6.
The BMW X6 is now in its third generation, with all models based on the X5. Where the X6 differs is in its coupe-like profile, which has been so popular that its spurred many rivals to enter the SUV-coupe sector, including the Mercedes-Benz GLE Coupe, Audi Q8, and Porsche Cayenne Coupe. Not only that, but the X6's success also prompted BMW to create the smaller X4 (based on the X3) and X2 (based on the X1).
So, that's two big, popular and capable BMW SUVs. But how do they compare? In this guide we explore exactly that, with scores and insights from CarGurus experts across a range of categories.
BMW X5 vs BMW X6
Practicality
When it comes to practicality, the BMW X5 and X6 are both really excellent, but it's the more traditional X5 that takes the win with a rating of 5 out of 5 stars, while the X6 receives a still commendable 4 out of 5 stars.
The BMW X5 offers impressive interior space, accommodating adults comfortably in the first two rows of seats. For those needing extra seating, an optional third-row package is available, making the X5 a seven-seater. The cabin quality is top-notch, and it offers practical features such as a split tailgate, a versatile 40:20:40 split rear seat, and a capacious 650 litres of boot space (1,870 litres with the rear seats folded).
The BMW X6 leans more towards style over pure practicality. Its distinctive coupe-like profile sacrifices some rear headroom and luggage space compared to the X5, but it's still far from bad. In fact, only the tallest adults will really feel squashed in the back seats, and despite the sloping tailgate there's still a respectable 580 litres of boot space (expandable to 1,530 litres with the rear seats folded down).
Driving Impressions
While they do have slight differences in the way the drive, the X5 and X6 are fundamentally both fantastic, so it's no surprise that CarGurus experts award both models an impressive 5 out of 5 stars for their driving experience.
Both offer a range of engine options, including straight-six petrol and diesel engines, as well as potent petrol V8s in the M Sport and X5/X6 M variants. The X5 also offers a plug-in hybrid model. In the X5, these engines deliver robust performance, with even the base xDrive30d boasting 282bhp and a 0-62mph time of 6.1 seconds. The X5's all-wheel-drive system and standard air suspension contribute to precise handling and controlled body roll, making it feel more like a saloon car on stilts than a lumbering behemoth.
However, if it's a sporty drive you want, then the X6 is even better. Like with the X5, even the entry-level xDrive30d delivers a brisk 0-62mph time of 6.1 seconds, only this time the handling is that little bit sharper and more responsive when you want it to be. Higher up the range, the X6 M50i is capable of reaching 62mph in just 4.3 seconds.
Bottom line is, these SUVs are quick, agile, and enjoyable to drive, proving that style and size doesn't have to come at the expense of performance.
Technology and Equipment
When it comes to technology and equipment, the BMW X5 and X6 offer a plethora of features, but it's the X5 that takes with win with a stellar 5 out of 5 stars, while the X6 receives 4 out of 5 stars.
The base trim for the BMW X5, the xLine, comes generously equipped with features like heated front sports seats, LED headlights, air suspension, DAB connectivity, and wireless charging. It's the standard air suspension that helps earn the X5 the extra star, because while also available on the X6 it doesn't come as standard. Opt for the M Sport trim, and you'll get M-specific visual enhancements, both inside and out, along with an improved braking system. For those seeking even more performance, BMW offers M Model versions with more power and cosmetic upgrades. Enthusiasts can go all out with the high-performance X5 M Competition model, boasting a whopping 617bhp.
With the X6, the range starts with Sport trim, offering leather upholstery, powered and heated front seats, a powered tailgate, automatic lights and wipers, parking assistance, and the same comprehensive infotainment system as the X5, which includes Apple CarPlay. This iDrive-backed system is packed with features but remains mostly easy to use and has pleasingly sharp graphics. The high-end M50i features a potent twin-turbo 4.4-litre V8 petrol engine with 523bhp, or for those really seeking the ultimate performance there's the X6 M Competition with the same twin-turbo, 617bhp V8 as the X5 M Competition.
Running Costs
It probably won't be a shock to hear that neither the X5 or BMW X6 will be particularly cheap to run. These are, after all, big, expensive, heavy and powerful SUVs. Both receive a 3 out of 5-star rating in this category.
The biggest exception to this rule is the plug-in hybrid X5 xDrive45e, which boasts low CO2 emissions and impressive fuel economy of 235.4mpg on the WLTP testing cycle. Do bear in mind, however, that you'll only see figures like that if you regularly plug in to take advantage of the 40-50 miles of realistic EV range.
Diesel options like the xDrive40d and xDrive30d offer around 35mpg on average but have higher emissions. Petrol variants like the xDrive40i and high-performance models like the X5 M50i come with higher running costs, both in terms of fuel consumption and emissions.
On the X6 front, running costs remain on the higher side, not helped because there's no plug-in hybrid version available in the current generation. The xDrive30d Sport is the most economical option, delivering around 35mpg in real world driving, depending on driving style. The performance-oriented X6 M models, while thrilling to drive, come with significantly higher fuel consumption and emissions, contributing to a pricier ownership experience.
Depreciation is also worth considering, particularly for the high-performance models which can lose a significant amount of their value over time. BMW's Servicing packages do at least help to spread the cost of servicing, and are worth investigating.
Reliability
The BMW X5 finished 9th out of the 24 cars in the large SUV class in the 2022 What Car? Reliability Index. While the X6 didn't feature, it's safe to say it should be similarly reliable given these are basically the same cars under the skin. In the same survey BMW as a brand finished 12th of the 32 brands included.
The X5 and X6 both come with BMW's three-year, unlimited-mileage warranty from new, which is extendable with BMW's Insured Warranty option. Roadside assistance is included for three years, ensuring you're covered in case of emergencies.
If buying used, BMW's approved used scheme is worth considering for its comprehensive warranty offering.
Verdict
These are both great cars, and highly recommendable for anybody seeking a large, luxury SUV. Objectively, the X5 is the better choice; it's bigger, more practical and also cheaper to buy. In fact it's so good that our experts award it an overall rating of 5 out of 5 stars.
If the X5 is the luxury SUV you choose with your head, then the X6 is the one you buy with your heart. It's a really good vehicle, and if you love the way it looks you're not going to be disappointed by the way it drives. It doesn't, however, represent as good value for money as the X5, which is why it scores a 4 out of 5 stars. Overall though, we wouldn't blame you for wanting either.
Choose a BMW X5 if:
- You need the most interior space and practicality possible, including the option of seven seats.
- A more traditional SUV is your preference.
- A wide range of engine options and versatile configurations appeal to you.
Search for a BMW X5 on CarGurus
Choose a BMW X6 if:
- You seek a distinctive and stylish SUV.
- Performance and agility are high on your list of priorities.
- You value a unique design that stands out from the crowd.
Search for a BMW X6 on CarGurus