Bentley Bentayga vs Aston Martin DBX
A detailed look at how two of Australia's most popular SUVs compare on price, running costs, safety, and everyday livability.
Specifications and pricing correct at time of publishing. Prices are RRP before on-road costs unless stated otherwise. Always confirm with the manufacturer or dealer before purchasing.
Bentley Bentayga
From $412,600
SUV
Twin-turbo petrol
405kW
12.7 L/100km
ANCAP: no data
484L
Aston Martin DBX
From $390,000
SUV
Twin-turbo petrol
405kW
14.3 L/100km
ANCAP: no data
632L
Price Breakdown
The Bentley Bentayga starts from $412,600 before on-road costs, while the Aston Martin DBX opens at $390,000. That makes the Aston Martin DBX the more affordable entry point by $22,600.
Once you factor in stamp duty, registration, CTP insurance, and dealer delivery, expect to add roughly 8-12% on top of the RRP depending on your state. That puts estimated driveaway prices in the ballpark of $453,860 and $429,000 respectively.
Over 5 years, the running costs favour the Bentley Bentayga by roughly $2,280 in fuel alone.
Safety Rundown
ANCAP safety ratings have not been published for both models yet. We will update this section when crash test results are available.
Feature Showdown
Both come with modern infotainment systems. Apple CarPlay and Android Auto are standard across both.
The Bentley Bentayga stands out with wireless charging, Bowers & Wilkins audio and ambient lighting that you will not find on the Aston Martin DBX. The Aston Martin DBX counters with Burmester audio. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
The Bentley Bentayga uses a Twin-turbo petrol producing 405kW and 770Nm of torque, sent through a automatic to a AWD layout. It covers the 0-100km/h sprint in 4.5 seconds.
The Aston Martin DBX responds with a Twin-turbo petrol making 405kW and 700Nm, paired to a automatic driving all four wheels. It gets to 100km/h in 4.5 seconds.
Power output is identical on paper, so the difference comes down to tuning, weight distribution, and suspension. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Bentley Bentayga measures 5,141mm long on a 2,995mm wheelbase, 102mm longer than the Aston Martin DBX at 5,039mm (3,060mm wheelbase). The longer wheelbase on the Aston Martin DBX generally means more rear legroom.
Boot space is 484L in the Bentley Bentayga and 632L in the Aston Martin DBX, giving the Aston Martin DBX a 148L advantage.
Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
13.1m diameter
Large
Based on 13.1m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Turning circle ratings
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $3,620/year for the Bentley Bentayga and $4,076/year for the Aston Martin DBX. That is a $456 annual difference in favour of the Bentley Bentayga.
Estimated annual total: $3,620 (Bentley Bentayga) vs $4,076 (Aston Martin DBX). The Bentley Bentayga saves you roughly $456 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 3 years (Bentley Bentayga) vs 3 years (Aston Martin DBX). Both match on warranty length.
Who Should Buy Which?
Buy the Bentley Bentayga if: You want lower running costs, or prefer Bentley's approach to design and ownership experience.
Buy the Aston Martin DBX if: You want the lower entry price, need more boot space, or prefer Aston Martin's approach to design and ownership experience.
The Verdict
The Aston Martin DBX takes 2 of 3 key spec categories and comes in at a lower price. The Bentley Bentayga will save you roughly $456 a year in fuel. If boot space matters, the Aston Martin DBX has a clear edge. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, Bentley Bentayga and Aston Martin DBX?
The Aston Martin DBX is the cheapest at $390,000 before on-road costs. That undercuts the Bentley Bentayga by $22,600.
Which is the most fuel-efficient?
The Bentley Bentayga uses the least fuel at 12.7L/100km on the combined cycle.
What are the ANCAP safety ratings?
None of Bentley Bentayga and Aston Martin DBX carry a published ANCAP rating yet — check back as they are tested.
Which has the most boot space?
The Aston Martin DBX has the largest boot at 632L.
Which can tow the most?
The Aston Martin DBX has the highest braked towing capacity at 2,700kg.
Disclaimer: All information in this comparison was believed to be correct at the time of publishing (20 April 2026). Prices are manufacturer recommended retail prices (RRP) and may vary by state, dealer, and options. Driveaway costs include estimated on-road costs for Victoria. Fuel economy figures are WLTP/ADR combined cycle. Specifications can change without notice. Always verify with the manufacturer before making a purchase decision. CarSorted does not accept payment for recommendations.
Auto-generated from CarSorted's specification data · 20 April 2026
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