Aston Martin
DBX
Owner report available
Bentley
Bentayga
Owner report available
Aston Martin DBX vs Bentley Bentayga
The short answer
Based on available data, the Aston Martin DBX comes out ahead of the Bentley Bentayga 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.
Specs side by side
What owners say
DBX
Overall
Sentiment is sharply divided. The vehicle is universally praised for its stunning exterior design, with frequent mentions of its gorgeous appearance, beautiful color options, and the "exotic shock factor" it provides. The interior is also noted for its "absolutely amazing" quality and materials.
Best version to buy
Insufficient owner data available to declare a consensus "best" trim. The DBX 707 high-performance variant is mentioned in the context of performance targets and a planned successor (DBX S).
Known issues
- Severe electrical system failures: Recurrent 12V/48V system warnings, complete battery drain, vehicle refusing to start, requiring multiple dealer visits and tows. Frequency: very frequent.
- General poor reliability / build quality: Multiple issues including loose shields causing rattles, failed window actuators, cracking subwoofer brackets, windscreen wipers detaching, and doors/windows misaligned from factory.
- Outdated/inferior technology: Criticisms of the older Mercedes COMAND infotainment system (in pre-refresh models), lack of modern driver assistance features (e.g., semi-autonomous driving) compared to German competitors.
Bentayga
Overall
Owner sentiment is mixed, heavily dependent on the specific powertrain and the owner's priorities. The vehicle is widely praised for its exceptional comfort, commanding road presence, and high-quality interior fit and finish, with one owner describing it as "the most comfortable car I've ever owned." It is frequently positioned as a more driver-focused and performance-oriented alternative to the Rolls-Royce Cullinan. However, significant and very frequent criticism is directed at extremely high ownership costs, including exorbitant repair bills, expensive annual maintenance (estimated at $1,250+ USD, potentially doubling with high mileage), and catastrophic depreciation.
Best version to buy
Insufficient owner data available to declare a consensus "best" version. Feedback indicates trade-offs: the V8 engine (including Azure and S trims) is noted for being "bullet proof" in terms of reliability relative to other Bentleys, while the W12 is praised for power and refinement but flagged for extreme repair costs.
Known issues
- Extremely high repair and maintenance costs: includes $14,000 USD oil leak repairs, $16,000 infotainment unit replacements, and $24,000 fenders. Annual service starts at ~$1,250. Frequency: very frequent.
- Severe depreciation: vehicles depreciate "like crazy," making resale financially painful. Frequency: very frequent.
- W12 engine long-term reliability concerns: noted as "very expensive when they break." Frequency: recurrent.
The verdict
The Aston Martin DBX is the better choice for most buyers.
It has more power on its best-equipped version than the Bentley Bentayga, based on the data above. If efficiency matters more to you than outright power, the Bentley Bentayga is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Aston Martin DBX or the Bentley Bentayga?
Owner reports show similar reliability sentiment for the Aston Martin DBX and the Bentley Bentayga. Check the known issues listed above for specific differences between the two.
Which is better for families, the Aston Martin DBX or the Bentley Bentayga?
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.
Which has better fuel economy, the Aston Martin DBX or the Bentley Bentayga?
The EPA rates the 2026 Aston Martin DBX at 16–17 mpg combined and the 2027 Bentley Bentayga at 16–21 mpg, depending on the version.
Which is cheaper to maintain, the Aston Martin DBX or the Bentley Bentayga?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Bentley Bentayga than the Aston Martin DBX. See the known issues comparison above.