Porsche 911 vs BMW M8
A detailed look at how two of Australia's most popular Coupes 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 911 starts from $248,400 before on-road costs, while the BMW M8 opens at $377,000. That makes the Porsche 911 the more affordable entry point by $128,600.
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 $273,240 and $414,700 respectively.
Over 5 years, the running costs are nearly identical since both have similar efficiency.
Safety Rundown
Both the Porsche 911 and BMW M8 hold a 5-star ANCAP safety rating.
Where the two diverge is in active safety technology. The BMW M8 packs more ADAS features with 7 out of 10 key systems fitted, compared to 0 in the Porsche 911.
Both include the essentials: a reversing camera. The BMW M8 adds a 360-degree camera that the Porsche 911 misses.
Feature Showdown
Both come with modern infotainment systems.
The BMW M8 counters with wireless Apple CarPlay/Android Auto, head-up display, wireless charging, panoramic roof, heated front seats, ventilated seats, power tailgate, Bowers & Wilkins audio and ambient lighting that the Porsche 911 does not offer. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
The Porsche 911 uses a Petrol producing 290kW and 450Nm of torque, sent through a 8-speed pdk to a RWD layout. It covers the 0-100km/h sprint in 4.1 seconds.
The BMW M8 responds with a Petrol making 460kW and 750Nm, paired to a auto driving all four wheels. It gets to 100km/h in 5 seconds.
The BMW M8 has the clear power advantage at 460kW vs 290kW. In the real-world sprint, the Porsche 911 is 0.9s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Porsche 911 measures 4,533mm long on a 2,450mm wheelbase, 565mm shorter than the BMW M8 at 5,098mm (3,027mm wheelbase). The longer wheelbase on the BMW M8 generally means more rear legroom.
Boot space is 132L in the Porsche 911 and 420L in the BMW M8, giving the BMW M8 a 288L advantage.
Turning Circle
Kerb-to-kerb diameter. Smaller turns easier in tight carparks and U-turns.
11.4m diameter
Average
Based on 11.4m 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 $3,164/year for the Porsche 911 and $3,278/year for the BMW M8. That is a $114 annual difference in favour of the Porsche 911.
Estimated annual total: $3,164 (Porsche 911) vs $3,278 (BMW M8). The Porsche 911 saves you roughly $114 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.
Warranty: 3 years / 999,999km (Porsche 911) vs 5 years / 999,999km (BMW M8). The BMW M8 has longer coverage.
Who Should Buy Which?
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.
Buy the BMW M8 if: You prioritise performance, need more boot space, value a longer warranty, or prefer BMW's approach to design and ownership experience.
The Verdict
This is genuinely close. The Porsche 911 and BMW M8 trade blows across the spec sheet, and neither runs away with an outright win. The Porsche 911 will save you roughly $114 a year in fuel. If boot space matters, the BMW M8 has a clear edge. The BMW M8 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 911 and BMW M8?
The Porsche 911 is the cheapest at $248,400 before on-road costs. That undercuts the BMW M8 by $128,600.
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 and BMW M8 all hold a 5-star ANCAP rating. Compare the active-safety features above to separate them.
Which has the most boot space?
The BMW M8 has the largest boot at 420L.
Which has the best warranty?
The BMW M8 has the longest warranty at 5 years / 1000k km.
Which is the most powerful?
The BMW M8 makes the most power at 460kW. 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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