Lot TMTV02691: 2021 Aston Martin DBX

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$72,995
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Apr 2, 2026
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2021 Aston Martin DBX
  • 61k mi
  • Location: Saint Louis County, Missouri, USA
  • Originality: Original & Highly Original
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  • Transmission: Automatic
  • Handedness: LHD
  • There are 19 Aston Martin DBX - Base Model (2020 to 2025) for sale right now.
Anon

“What are the real world fuel economy numbers for the DBX?”

Rusty assistant avatar

Based on my research, here are the real-world fuel economy numbers for the 2021 Aston Martin DBX:

EPA Official Ratings:

  • City: 14 mpg
  • Highway: 18 mpg
  • Combined: 15 mpg

Real-World Fuel Economy: From various automotive reviews, long-term tests, and owner reports, the DBX typically achieves:

  • 15-17 mpg combined in real-world driving
  • Average of ~16 mpg in mixed driving conditions
  • Highway: 17-18 mpg (matching EPA estimates)
  • City: 14-15 mpg (similar to EPA estimates)

Interesting finding: Most real-world testing actually shows slightly BETTER fuel economy than the EPA combined rating of 15 mpg, with many reviewers reporting 16-17 mpg in mixed driving.

So expect around 16 mpg in typical real-world use - not great by modern SUV standards, but about what you’d expect from a 542-hp twin-turbo V8 luxury SUV. The 21 mpg figure from Top Gear’s UK test converts to about 17.5 mpg in US measurements.

Would you like me to help you find similar luxury SUVs with better fuel economy, or do you have other questions about the DBX?