Lexus GX vs Porsche Cayenne
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.
Price Breakdown
The Lexus GX starts from $119,950 before on-road costs, while the Porsche Cayenne opens at $138,800. That makes the Lexus GX the more affordable entry point by $18,850.
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 $131,945 and $152,680 respectively.
Over 5 years, the running costs favour the Lexus GX by roughly $3,135 in fuel alone.
Safety Rundown
Both the Lexus GX and Porsche Cayenne hold a 5-star ANCAP safety rating.
Where the two diverge is in active safety technology. The Porsche Cayenne packs more ADAS features with 7 out of 10 key systems fitted, compared to 4 in the Lexus GX.
Both include the essentials: lane keep assist, adaptive cruise control, a reversing camera.
Feature Showdown
Both come with modern infotainment systems. Apple CarPlay and Android Auto are standard across both.
The Lexus GX stands out with wireless Apple CarPlay/Android Auto, wireless charging and ventilated seats that you will not find on the Porsche Cayenne. The Porsche Cayenne counters with Apple CarPlay, panoramic roof and BOSE audio. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
The Lexus GX uses a Petrol producing 262kW and 650Nm of torque, sent through a 10-speed auto to a 4WD layout.
The Porsche Cayenne responds with a Petrol making 260kW and 500Nm, paired to a 8-speed auto driving all four wheels. It gets to 100km/h in 5.7 seconds.
The Lexus GX has the clear power advantage at 262kW vs 260kW. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Lexus GX measures 4,955mm long on a 2,850mm wheelbase, 25mm longer than the Porsche Cayenne at 4,930mm (2,895mm wheelbase). The longer wheelbase on the Porsche Cayenne generally means more rear legroom.
Boot space is 390L in the Lexus GX and 698L in the Porsche Cayenne, giving the Porsche Cayenne a 308L advantage. The Lexus GX seats 7 vs 5.
For towing, the Porsche Cayenne leads with a 3,500kg braked capacity vs 3,500kg. That 0kg difference matters if you regularly hitch up.
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $2,850/year for the Lexus GX and $3,477/year for the Porsche Cayenne. That is a $627 annual difference in favour of the Lexus GX.
Estimated annual total: $2,850 (Lexus GX) vs $3,477 (Porsche Cayenne). The Lexus GX saves you roughly $627 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 5 years / 999,999km (Lexus GX) vs 3 years / 999,999km (Porsche Cayenne). The Lexus GX has longer coverage.
Who Should Buy Which?
Buy the Lexus GX if: You want the lower entry price, prioritise performance, want lower running costs, value a longer warranty, or prefer Lexus's approach to design and ownership experience.
Buy the Porsche Cayenne if: You need more boot space, or prefer Porsche's approach to design and ownership experience.
The Verdict
The Lexus GX takes 4 of 5 key spec categories and comes in at a lower price. The Lexus GX will save you roughly $627 a year in fuel. If boot space matters, the Porsche Cayenne has a clear edge. The Lexus GX adds peace of mind with a longer 5-year warranty. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, Lexus GX and Porsche Cayenne?
The Lexus GX is the cheapest at $119,950 before on-road costs. That undercuts the Porsche Cayenne by $18,850.
Which is the most fuel-efficient?
The Lexus GX uses the least fuel at 10L/100km on the combined cycle.
Which is safest?
They are evenly matched — Lexus GX and Porsche Cayenne all hold a 5-star ANCAP rating. Compare the active-safety features above to separate them.
Which has the most boot space?
The Porsche Cayenne has the largest boot at 698L.
Which can tow the most?
The Lexus GX has the highest braked towing capacity at 3,500kg.
Which has the best warranty?
The Lexus GX has the longest warranty at 5 years / 1000k km.
Which is the most powerful?
The Lexus GX makes the most power at 262kW.
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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