Porsche Cayenne vs Audi Q8

The Porsche Cayenne starts from $138,800 before on-road costs, while the Audi Q8 opens at $143,415. That makes the Porsche Cayenne the more affordable entry point by $4,615.

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 $152,680 and $157,757 respectively.

Over 5 years, the running costs favour the Audi Q8 by roughly $4,700 in fuel alone.

ANCAP safety ratings have not been published for both models yet. We will update this section when crash test results are available.

The Porsche Cayenne features a 12.3-inch touchscreen paired with a 12.6-inch digital dash, while the Audi Q8 gets a 10.1-inch display and 12.3-inch instruments. Apple CarPlay and Android Auto are standard across both.

The Porsche Cayenne stands out with Apple CarPlay and BOSE audio that you will not find on the Audi Q8. The Audi Q8 counters with wireless Apple CarPlay/Android Auto, wireless charging, ventilated seats, Bang & Olufsen audio and ambient lighting. Which feature set matters more depends on your daily routine and priorities.

The Porsche Cayenne uses a Petrol producing 260kW and 500Nm of torque, sent through a 8-speed auto to a AWD layout. It covers the 0-100km/h sprint in 6 seconds.

The Audi Q8 responds with a Diesel MHEV making 210kW and 600Nm, paired to a automatic driving all four wheels. It gets to 100km/h in 6.1 seconds.

The Porsche Cayenne has the clear power advantage at 260kW vs 210kW. In the real-world sprint, the Porsche Cayenne is 0.1s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.

The Porsche Cayenne measures 4,930mm long on a 2,895mm wheelbase, 76mm shorter than the Audi Q8 at 5,006mm (2,995mm wheelbase). The longer wheelbase on the Audi Q8 generally means more rear legroom.

Boot space is 698L in the Porsche Cayenne and 605L in the Audi Q8, giving the Porsche Cayenne a 93L advantage.

For towing, the Audi Q8 leads with a 3,500kg braked capacity vs 3,500kg. That 0kg difference matters if you regularly hitch up.

Based on 15,000km of annual driving, fuel costs roughly $2,964/year for the Porsche Cayenne and $2,024/year for the Audi Q8. That is a $940 annual difference in favour of the Audi Q8.

Estimated annual total: $2,964 (Porsche Cayenne) vs $2,024 (Audi Q8). The Audi Q8 saves you roughly $940 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.

Warranty: 3 years / 999,999km (Porsche Cayenne) vs 5 years / 999,999km (Audi Q8). The Audi Q8 has longer coverage.