BMW iX 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 BMW iX starts from $142,900 before on-road costs, while the Porsche Cayenne opens at $138,800. That makes the Porsche Cayenne the more affordable entry point by $4,100.
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 $157,190 and $152,680 respectively.
The BMW iX qualifies for FBT exemption as an electric vehicle, which can dramatically reduce the effective cost for novated lease buyers. The Porsche Cayenne, as a petrol model, does not qualify.
Safety Rundown
Both the BMW iX and Porsche Cayenne hold a 5-star ANCAP safety rating.
Where the two diverge is in active safety technology. The BMW iX packs more ADAS features with 8 out of 10 key systems fitted, compared to 7 in the Porsche Cayenne.
Both include the essentials: autonomous emergency braking, lane keep assist, adaptive cruise control, a reversing camera.
Feature Showdown
The BMW iX features a 14.9-inch touchscreen paired with a 12.3-inch digital dash, while the Porsche Cayenne gets a 12.3-inch display and 12.6-inch instruments. Apple CarPlay and Android Auto are standard across both.
The BMW iX stands out with wireless Apple CarPlay/Android Auto, wireless charging, ventilated seats, Harman Kardon audio and ambient lighting that you will not find on the Porsche Cayenne. The Porsche Cayenne counters with Apple CarPlay and BOSE audio. Which feature set matters more depends on your daily routine and priorities.
Interior trim differs: the BMW iX gets vernasca leather upholstery while the Porsche Cayenne offers leather. Climate control is 4-zone in the BMW iX and 2-zone in the Porsche Cayenne.
Drivetrain
The BMW iX uses a Electric producing 300kW and 700Nm of torque, sent through a auto to a AWD layout. It covers the 0-100km/h sprint in 4.6 seconds.
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 BMW iX has the clear power advantage at 300kW vs 260kW. In the real-world sprint, the BMW iX is 1.1s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The BMW iX measures 4,953mm long on a 3,000mm wheelbase, 23mm longer than the Porsche Cayenne at 4,930mm (2,895mm wheelbase). The longer wheelbase on the BMW iX generally means more rear legroom.
Boot space is 500L in the BMW iX and 698L in the Porsche Cayenne, giving the Porsche Cayenne a 198L advantage.
For towing, the Porsche Cayenne leads with a 3,500kg braked capacity vs 2,500kg. That 1,000kg difference matters if you regularly hitch up.
Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
12.1m to 12.6m
Based on 12.6m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Based on 12.1m turning circle:
- U-turn on standard street (7m+ wide)
- Standard parking bay
- Tight carparks
- Narrow laneways
Turning circle ratings
True Cost to Own
Running cost data is not yet available for both models. We will update when figures are confirmed.
Warranty: 5 years / 999,999km (BMW iX) vs 3 years / 999,999km (Porsche Cayenne). The BMW iX has longer coverage.
Who Should Buy Which?
Buy the BMW iX if: You prioritise performance, value a longer warranty, or prefer BMW's approach to design and ownership experience.
Buy the Porsche Cayenne if: You want the lower entry price, need more boot space, need stronger towing, or prefer Porsche's approach to design and ownership experience.
The Verdict
This is genuinely close. The BMW iX and Porsche Cayenne trade blows across the spec sheet, and neither runs away with an outright win. If boot space matters, the Porsche Cayenne has a clear edge. The BMW iX 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, BMW iX and Porsche Cayenne?
The Porsche Cayenne is the cheapest at $138,800 before on-road costs. That undercuts the BMW iX by $4,100.
Which is the most fuel-efficient?
The Porsche Cayenne uses the least fuel at 12.2L/100km on the combined cycle.
Which is safest?
They are evenly matched — BMW iX 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 Porsche Cayenne has the highest braked towing capacity at 3,500kg.
Which has the best warranty?
The BMW iX has the longest warranty at 5 years / 1000k km.
Which is the most powerful?
The BMW iX makes the most power at 300kW. The BMW iX is quickest to 100km/h in 4.6s.
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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