Porsche Cayenne vs Mercedes-Benz GLC
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 Porsche Cayenne starts from $138,800 before on-road costs, while the Mercedes-Benz GLC opens at $89,900. That makes the Mercedes-Benz GLC the more affordable entry point by $48,900.
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 $98,890 respectively.
Over 5 years, the running costs favour the Mercedes-Benz GLC by roughly $5,840 in fuel alone.
Safety Rundown
Both the Porsche Cayenne and Mercedes-Benz GLC 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 6 in the Mercedes-Benz GLC.
Both include the essentials: autonomous emergency braking, lane keep assist, adaptive cruise control, a reversing camera. The Porsche Cayenne adds a 360-degree camera that the Mercedes-Benz GLC misses.
Feature Showdown
Both come with modern infotainment systems. Apple CarPlay and Android Auto are standard across both.
The Porsche Cayenne stands out with Apple CarPlay, heated front seats and BOSE audio that you will not find on the Mercedes-Benz GLC. The Mercedes-Benz GLC counters with wireless Apple CarPlay/Android Auto, wireless charging and ambient lighting. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
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 5.7 seconds.
The Mercedes-Benz GLC responds with a Petrol making 150kW and 300Nm, paired to a automatic driving all four wheels. It gets to 100km/h in 8.2 seconds.
The Porsche Cayenne has the clear power advantage at 260kW vs 150kW. In the real-world sprint, the Porsche Cayenne is 2.5s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Porsche Cayenne measures 4,930mm long on a 2,895mm wheelbase, 214mm longer than the Mercedes-Benz GLC at 4,716mm (2,888mm wheelbase). The longer wheelbase on the Porsche Cayenne generally means more rear legroom.
Boot space is 698L in the Porsche Cayenne and 600L in the Mercedes-Benz GLC, giving the Porsche Cayenne a 98L advantage.
For towing, the Porsche Cayenne leads with a 3,500kg braked capacity vs 2,000kg. That 1,500kg difference matters if you regularly hitch up.
Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
11.9m diameter
Average
Based on 11.9m 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 $3,477/year for the Porsche Cayenne and $2,309/year for the Mercedes-Benz GLC. That is a $1,168 annual difference in favour of the Mercedes-Benz GLC.
Estimated annual total: $3,477 (Porsche Cayenne) vs $2,309 (Mercedes-Benz GLC). The Mercedes-Benz GLC saves you roughly $1,168 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 (Mercedes-Benz GLC). The Mercedes-Benz GLC has longer coverage.
Who Should Buy Which?
Buy the Porsche Cayenne if: You prioritise performance, need more boot space, need stronger towing, or prefer Porsche's approach to design and ownership experience.
Buy the Mercedes-Benz GLC if: You want the lower entry price, want lower running costs, value a longer warranty, or prefer Mercedes-Benz's approach to design and ownership experience.
The Verdict
The Porsche Cayenne takes 4 of 7 key spec categories. The Mercedes-Benz GLC will save you roughly $1,168 a year in fuel. If boot space matters, the Porsche Cayenne has a clear edge. The Mercedes-Benz GLC 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, Porsche Cayenne and Mercedes-Benz GLC?
The Mercedes-Benz GLC is the cheapest at $89,900 before on-road costs. That undercuts the Porsche Cayenne by $48,900.
Which is the most fuel-efficient?
The Mercedes-Benz GLC uses the least fuel at 8.1L/100km on the combined cycle.
Which is safest?
They are evenly matched — Porsche Cayenne and Mercedes-Benz GLC 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 Mercedes-Benz GLC has the longest warranty at 5 years / 1000k km.
Which is the most powerful?
The Porsche Cayenne makes the most power at 260kW. The Porsche Cayenne is quickest to 100km/h in 5.7s.
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
Comments (0)
Sign in to join the conversation
No comments yet. Be the first!
