The short answer
Based on available data, the BMW 7 Series comes out ahead of the Jaguar XJ 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 generation and ownership phase. Long-term owner reports for older generations (e.g., E65, F01, G11/G12) highlight significant concerns regarding high maintenance costs, complex electronics, and expensive repairs as the vehicles age, particularly when professional labor is required. These models are described as "over-engineered" with components prone to failure, leading to substantial out-of-pocket expenses.
Best version to buy
Insufficient owner data available to designate a specific "best" trim or model year. One owner of a 2015 diesel model reported satisfaction with its fuel economy, but no consensus exists on optimal configurations.
Known issues
Overall
Sentiment is deeply divided and heavily dependent on the specific generation and powertrain. For the classic X300/X308 (mid-1990s to early 2000s) and the Ford-era X350/X358 (2003-2009), long-term owner feedback is mixed, with strong praise for their distinctive styling, luxurious interiors, and driving experience, but severe criticism for reliability, aging poorly after high mileage, and costly repairs. The aluminum-bodied X350/X358 generation, in particular, is noted for its rust-free construction and more reliable naturally-aspirated 4.2L V8, with some owners reporting affordable maintenance using common Ford/Lincoln parts.
Best version to buy
For the X350/X358 generation (2003-2009), the 2006-2009 model years with the naturally-aspirated 4.2L V8 are recommended to avoid early issues present in 2004-2005 models. The Super V8 (SV8) trim is highlighted as a particularly good example.
Known issues
The verdict
The BMW 7 Series is the better choice for most buyers.
It has more power on its best-equipped version than the Jaguar XJ, based on the data above. If efficiency matters more to you than outright power, the Jaguar XJ is worth a closer look instead.
Common problems by model year
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Owner reports show similar reliability sentiment for the BMW 7 Series and the Jaguar XJ. Check the known issues listed above for specific differences between the two.
Data on family-specific factors like cargo space is limited for one or both models, but based on available reports, both are positioned as practical daily drivers. Check the specs table above for seating and body type.
The EPA rates the 2027 BMW 7 Series at 26 mpg combined and the 2019 Jaguar XJ at 18–21 mpg, depending on the version.
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the BMW 7 Series than the Jaguar XJ. See the known issues comparison above.