The Aston Martin DBX and Bentley Bentayga are not single, fixed rivals: each name covers several versions, and the choice changes with the trim, seating layout and options. On the published figures, the DBX707 is quicker and more powerful than the cited Bentayga V8; the Bentayga offers a wider choice of seating configurations and comfort equipment. Available figures do not establish which SUV costs less to own overall.
Which is faster: DBX or Bentayga?
For a clear comparison, use named variants rather than treating either model family as one specification. Aston Martin’s US DBX707 page lists 697 bhp, 900 Nm of torque, 0–60 mph in 3.1 seconds and a 193 mph top speed. Bentley’s cited US Bentayga V8 page lists 542 bhp, 568 lb-ft, 0–60 mph in 4.4 seconds and a 180 mph maximum speed. These are manufacturer-published figures, not results from a shared independent test. Aston Martin DBX707 specifications; Bentley Bentayga V8 specifications.
DBX707 and DBX S
The DBX707’s published figures make it the quicker of these two specific versions on paper. Aston Martin announced the DBX S as a new flagship on 30 April 2025, quoting 727 PS and 900 Nm. It also says optional lightweight measures can reduce mass by up to 47 kg compared with the continuing DBX707. Those are manufacturer claims; they should not be treated as independent test results or compared as if PS and bhp were identical units. Aston Martin’s DBX S announcement.
Bentayga V8 and other versions
The Bentayga V8 figures above do not describe every Bentayga. Bentley’s range also includes a higher-output performance V8 and a V6 hybrid, alongside versions such as Azure and EWB. Confirm the exact powertrain and model year before comparing acceleration or equipment; a standard V8 is not a stand-in for the full range. Bentley Bentayga range.
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Which is more comfortable for daily use?
There is no universal comfort winner in the available specifications. Suspension design and seat features indicate what each vehicle offers, but the ride also depends on trim, wheel and tire fitment, options, road surface and passenger preference. A same-route test drive in the exact configurations you are considering is more useful than assuming every DBX or Bentayga feels the same.
Ride and handling
Aston Martin describes the DBX707 as having adaptive triple-chamber air suspension and adaptive damping. Bentley says its V8 models include Bentley Dynamic Ride, an electronic anti-roll system, and all-wheel steering. These are equipment descriptions, not a direct comparison of ride quality. An older Auto Express road test, published around 2020, described the DBX’s sports-car character as evident in its ride and handling and the Bentayga as more luxury-focused. That impression concerns the cars tested at the time, not the present DBX S or current Bentayga lineup. Auto Express DBX road test.
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Seats and cabin choices
Bentley offers Bentayga layouts with four seats, 4+1 seating or five seats, depending on version. Its optional Seat Comfort Specification includes heating, ventilation and massage for the driver and front passenger. That flexibility may matter if you need a particular rear-seat arrangement or prioritize front-seat adjustments; check which layout and option package are fitted to the vehicle you are pricing.
Aston Martin describes the DBX707 cabin as combining digital touchscreens with analogue controls. Whether that interface suits you is subjective, so try the controls and infotainment in person. Neither manufacturer’s feature list proves that its SUV is more comfortable for every driver or passenger. Bentley Bentayga range and equipment; Aston Martin DBX707 equipment.
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What do the prices and fuel figures show?
A US Cars.com comparison listing for selected 2026 trims showed a $257,000 starting MSRP for the DBX 707 and $270,900 for the Bentayga Azure. It listed 697 hp and 542 hp respectively, and fuel economy of 15 city/20 highway mpg for the DBX 707 versus 14 city/21 highway mpg for the Bentayga Azure. This is a third-party listing snapshot accessed in 2026; prices and listings can change, and these two trims are not a like-for-like comparison of every version. Cars.com 2026 comparison listing.
Fuel figures from different test systems should not be compared as though they were measured on the same basis. Aston Martin’s US DBX707 page gives 15 city/20 highway/17 combined mpg. Bentley’s cited Bentayga V8 page gives 21.7 mpg combined under WLTP. The latter is a different test cycle, so it cannot establish that the Bentayga V8 will use less fuel than the DBX707 in US driving. Actual fuel spending depends on mileage, local fuel prices and real-world consumption. Aston Martin DBX707 specifications and fuel figures; Bentley Bentayga V8 specifications and WLTP figure.
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Which costs less to own?
The evidence available does not establish a fair total-cost-of-ownership winner. Purchase price and fuel economy are only parts of the bill; scheduled service, repairs, insurance, depreciation, tires, brakes, financing and warranty coverage can change the result. Cars.com’s selected 2026 US listings show a three-year basic warranty for both vehicles but do not state a mileage cap in the comparison. Verify warranty terms for the specific vehicle and market with the manufacturer or dealer.
Get comparable ownership quotes
- Match the vehicles. Choose the model year, trim, powertrain, options and new or used condition for each SUV. Compare the same ownership period and annual mileage.
- Ask for written service and warranty details. Bentley describes a Service Plan that provides attention from certified Bentley professionals, but the available figures do not provide a comparable current Aston Martin service-plan price or a side-by-side maintenance schedule. Ask both dealers for market-specific terms and itemized scheduled-service costs. Bentley Bentayga range and Service Plan information.
- Price the other major costs. Request insurance quotes and estimates for tires, brakes and likely repairs for the exact specifications. Use a consistent mileage, location and ownership term when comparing.
- Include resale and financing. Obtain vehicle-specific purchase and finance quotes, and compare expected resale values on the same time horizon. The published figures cited here do not settle depreciation or financing costs.
Cars.com’s listed MSRPs can orient a US buyer to the selected trims in its 2026 snapshot, but they are not a substitute for a current dealer quote. For either vehicle, a useful ownership comparison needs written, VIN- and market-specific numbers rather than a general claim that one badge is cheaper to run.
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How to choose between them
- Prioritize published acceleration and top speed: start with DBX707 versus Bentayga V8, or compare the DBX S with the appropriate higher-performance Bentayga version. Keep manufacturer figures and units distinct.
- Prioritize seating flexibility: check the Bentayga’s available four-seat, 4+1 and five-seat layouts against your passenger and cargo needs.
- Prioritize ride preference: test-drive the exact wheel, tire, suspension and seating configuration you would buy, on roads similar to your regular routes.
- Prioritize ownership cost: compare current written quotes for the same market, mileage, ownership period and condition; headline MSRP or a single fuel-economy figure cannot answer the whole question.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
