The short answer
Based on available data, the BMW X5 comes out ahead of the Volvo XC90 on power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Overall
Sentiment is mixed and heavily dependent on the specific generation, powertrain, and ownership approach. For the current G05 generation (2019+), the inline-six (B58) powertrain is very frequently praised for its performance and noted reliability, with some owners calling it "super reliable" and "the best inline 6 in the world." The driving experience is consistently highlighted as a major strength, described as "performance oriented" with superior ride, handling, and road feel compared to key competitors. However, significant criticism is directed at the plug-in hybrid variant (50e), with one detailed owner report citing a "terrible" experience involving multiple, repeated drivetrain failures and extensive dealership visits.
Best version to buy
Insufficient owner data available to declare a single "best" version. Strong, recurrent praise is directed at models equipped with the B58 inline-six engine (e.g., xDrive40i), which is lauded for its reliability and performance.
Known issues
Overall
Sentiment is mixed and heavily dependent on generation and powertrain. For the first-generation P28 platform (2003-2014), long-term owners express strong affection, praising its sturdiness, high-quality feel, and relative mechanical simplicity, especially in later model years with most issues resolved. For the second-generation SPA platform (2015-present), feedback is divided.
Best version to buy
For the second generation, the T8 Recharge plug-in hybrid in higher trims (Inscription, Ultra) is most frequently discussed and recommended for its blend of performance and efficiency. The Bowers & Wilkins audio system is specifically highlighted as a standout feature.
Known issues
The verdict
The BMW X5 is the better choice for most buyers.
It has more power on its best-equipped version than the Volvo XC90, based on the data above. If efficiency matters more to you than outright power, the Volvo XC90 is worth a closer look instead.
Common problems by model year
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Owner reports show similar reliability sentiment for the BMW X5 and the Volvo XC90. Check the known issues listed above for specific differences between the two.
The Volvo XC90 seats more passengers than the BMW X5 on its catalogued best-equipped version. Body type also differs: the BMW X5 is classed as a SAV, the Volvo XC90 as a SUV.
The EPA rates the 2027 BMW X5 at 26 mpg combined and the 2027 Volvo XC90 at 23–25 mpg, depending on the version.
Exact maintenance costs aren't in our data, but reliability signals above are the closest proxy: fewer reported issues generally means lower repair costs over time.