The BMW X5 and X6 are two of the German brand's most popular luxury SUV offerings, blending premium amenities with impressive performance capabilities. While they share many similarities under the skin, these two models cater to slightly different buyers with their distinct styling and packaging. Let's take a closer look at how they compare across key areas.
The BMW X5 is the more traditional of the two, offering a spacious and versatile interior with seating for up to seven passengers. Its boxy proportions and generous boot space make it an excellent choice for families or those who prioritise practicality. In contrast, the BMW X6 sacrifices some utility in favour of a more striking, coupe-like silhouette that is sure to turn heads. With its sloping roofline and sportier demeanour, the X6 appeals to buyers who value style and performance over outright practicality.
BMW X5 vs BMW X6
Practicality
The BMW X5 undoubtedly takes the lead when it comes to practicality and versatility. With seating for up to seven passengers and a generous 650-litre boot capacity (expanding to 1,870 litres with the rear seats folded), it offers ample space for families or those with active lifestyles. The split tailgate and 40:20:40 split-folding rear seats further enhance its practicality.
While the BMW X6 is based on the same platform as the X5, its sloping roofline compromises rear headroom and cargo capacity. With 580 litres of boot space (or 1,530 litres with the rear seats folded), it still offers a reasonable amount of room, but it falls short of the X5's cavernous interior. Those who frequently carry taller passengers or bulky items may find the X5 a more suitable choice.
Driving Impressions
Despite their differing body styles, both the BMW X5 and X6 deliver an engaging and rewarding driving experience, thanks to their sophisticated chassis and powerful engine options. The X5 offers a choice of straight-six petrol and diesel engines, as well as potent V8 options in the M Sport and M Competition variants. Even the base xDrive30d model packs 282bhp and can sprint from 0-62mph in just 6.1 seconds, which is impressive for a vehicle of its size.
The X6 follows a similar formula, with a range of turbocharged petrol and diesel engines that provide brisk acceleration. The range-topping M50i variant, powered by a 523bhp twin-turbo V8, can reach 62mph in a scintillating 4.3 seconds. Both models feature precise steering, well-controlled body roll, and an advanced all-wheel-drive system that enhances traction and handling.
While the X6's sloping roofline and lower ride height give it a slightly sportier demeanour, the X5 really isn't far behind in terms of being able to offer an impressively engaging drive for such a big and heavy car.
Technology and Equipment
Both the BMW X5 and X6 are well-equipped with the latest technology and premium amenities, befitting their luxury status. The X5's base xLine trim comes generously appointed with heated front sports seats, LED headlights, air suspension, DAB connectivity, and wireless charging, while the M Sport trim adds sportier styling elements and an upgraded braking system.
The X6 follows a similar trim structure, with the base Sport model offering leather upholstery, heated front seats, a powered tailgate, and a comprehensive infotainment system with Apple CarPlay and Android Auto compatibility. The M Sport and range-topping M50i variants add more performance-oriented upgrades and cosmetic enhancements.
It's worth noting that both models offer a wide range of optional extras and equipment packages, allowing buyers to tailor their vehicles to their specific preferences and budgets.
Running Costs
As with most luxury vehicles, running costs for the BMW X5 and X6 can be substantial, particularly when it comes to fuel consumption and emissions. The most efficient option in the X5 range is the plug-in hybrid xDrive45e, which boasts impressive claimed fuel economy figures of up to 235.4mpg and CO2 emissions as low as 27g/km on the WLTP cycle. This makes it an attractive choice for business users seeking to minimise company car tax.
The diesel xDrive40d and xDrive30d variants offer more modest fuel economy, averaging around 35mpg, while the petrol xDrive40i and high-performance M models are the least efficient, with fuel economy figures in the mid-20s and higher CO2 emissions.
The X6 follows a similar pattern, with the xDrive30d diesel offering the best fuel economy in the range, averaging between 39.2 and 42.8mpg, depending on wheel size. The more powerful xDrive40d and petrol models, especially the range-topping M50i, will be more costly to run due to their higher fuel consumption and emissions.
It's worth considering that both models will incur higher insurance premiums and maintenance costs compared to more mainstream SUVs, but this is to be expected in the luxury segment.
Reliability
BMW has made strides in improving its reliability in recent years, with the brand ranking a respectable eighth out of 31 manufacturers in the 2024 What Car? Reliability Survey. The X5 itself performed well in the luxury car category, coming in second out of 8 models considered.
While the X6 didn't feature in the same survey, the two cars are so closely related that you can apply the X5's strong showing to its more rakish sibling.
Both the X5 and X6 come with a standard three-year, unlimited-mileage warranty, which can be extended for an additional cost. BMW also offers fixed-price servicing packages to help manage maintenance costs.
Verdict
In the battle between the BMW X5 and X6, there is no clear winner – it ultimately comes down to individual priorities and preferences. If outright practicality and versatility are key concerns, the X5 is the more sensible choice, offering a spacious and family-friendly interior with ample luggage capacity.
However, if you're drawn to the X6's striking coupe-like silhouette and are willing to sacrifice some utility for a sportier driving experience and head-turning style, then it could be the better option for you.
Both models deliver the premium luxury and performance you'd expect from BMW, with impressive powertrains, advanced technology, and a rewarding driving experience. The X5 just about has the edge in terms of overall value and practicality, but the X6's unique design and dynamic character make it a compelling alternative for those who prioritise style and performance over outright utility.
