Bentley Bentayga vs Porsche 911
A detailed look at how two of Australia's most popular cars 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.
Price Breakdown
The Bentley Bentayga starts from $412,600 before on-road costs, while the Porsche 911 opens at $248,400. That makes the Porsche 911 the more affordable entry point by $164,200.
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 $273,240 respectively.
Over 5 years, the running costs favour the Porsche 911 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.
The Bentley Bentayga stands out with Apple CarPlay, head-up display, wireless charging, panoramic roof, heated front seats, ventilated seats, power tailgate, Bowers & Wilkins audio and ambient lighting that you will not find on the Porsche 911. 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 Porsche 911 responds with a Petrol making 290kW and 450Nm, paired to a 8-speed pdk driving the rear wheels. It gets to 100km/h in 4.1 seconds.
The Bentley Bentayga has the clear power advantage at 405kW vs 290kW. In the real-world sprint, the Porsche 911 is 0.4s quicker. 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, 608mm longer than the Porsche 911 at 4,533mm (2,450mm wheelbase). The longer wheelbase on the Bentley Bentayga generally means more rear legroom.
Boot space is 484L in the Bentley Bentayga and 132L in the Porsche 911, giving the Bentley Bentayga a 352L advantage. The Bentley Bentayga seats 5 vs 4.
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 $3,164/year for the Porsche 911. That is a $456 annual difference in favour of the Porsche 911.
Estimated annual total: $3,620 (Bentley Bentayga) vs $3,164 (Porsche 911). The Porsche 911 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 / 999,999km (Porsche 911). Both match on warranty length.
Who Should Buy Which?
Buy the Bentley Bentayga if: You prioritise performance, need more boot space, or prefer Bentley's approach to design and ownership experience.
Buy the Porsche 911 if: You want the lower entry price, want lower running costs, or prefer Porsche's approach to design and ownership experience.
The Verdict
The Porsche 911 takes 3 of 5 key spec categories and comes in at a lower price. The Porsche 911 will save you roughly $456 a year in fuel. If boot space matters, the Bentley Bentayga 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 Porsche 911?
The Porsche 911 is the cheapest at $248,400 before on-road costs. That undercuts the Bentley Bentayga by $164,200.
Which is the most fuel-efficient?
The Porsche 911 uses the least fuel at 11.1L/100km on the combined cycle.
Which is safest?
They are evenly matched — Porsche 911 all hold a 5-star ANCAP rating. Compare the active-safety features above to separate them.
Which has the most boot space?
The Bentley Bentayga has the largest boot at 484L.
Which is the most powerful?
The Bentley Bentayga makes the most power at 405kW. The Porsche 911 is quickest to 100km/h in 4.1s.
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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