Porsche 911 vs BMW M4
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 M4 opens at $168,700. That makes the BMW M4 the more affordable entry point by $79,700.
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 $185,570 respectively.
Over 5 years, the running costs favour the BMW M4 by roughly $1,425 in fuel alone.
Safety Rundown
Both the Porsche 911 and BMW M4 hold a 5-star ANCAP safety rating.
Where the two diverge is in active safety technology. The BMW M4 packs more ADAS features with 5 out of 10 key systems fitted, compared to 0 in the Porsche 911.
Both include the essentials: a reversing camera.
Feature Showdown
Both come with modern infotainment systems.
The BMW M4 counters with wireless Apple CarPlay/Android Auto, head-up display, heated front seats, ventilated seats, Harman Kardon 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 M4 responds with a Petrol making 353kW and 550Nm, paired to a manual driving the rear wheels. It gets to 100km/h in 3.5 seconds.
The BMW M4 has the clear power advantage at 353kW vs 290kW. In the real-world sprint, the BMW M4 is 0.6s 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, 268mm shorter than the BMW M4 at 4,801mm (2,857mm wheelbase). The longer wheelbase on the BMW M4 generally means more rear legroom.
Boot space is 132L in the Porsche 911 and 440L in the BMW M4, giving the BMW M4 a 308L 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 $2,879/year for the BMW M4. That is a $285 annual difference in favour of the BMW M4.
Estimated annual total: $3,164 (Porsche 911) vs $2,879 (BMW M4). The BMW M4 saves you roughly $285 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 M4). The BMW M4 has longer coverage.
Who Should Buy Which?
Buy the Porsche 911 if: You or prefer Porsche's approach to design and ownership experience.
Buy the BMW M4 if: You want the lower entry price, prioritise performance, need more boot space, want lower running costs, value a longer warranty, or prefer BMW's approach to design and ownership experience.
The Verdict
The BMW M4 takes 6 of 6 key spec categories and comes in at a lower price. The BMW M4 will save you roughly $285 a year in fuel. If boot space matters, the BMW M4 has a clear edge. The BMW M4 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.
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.
Published by CarSorted Editorial Team · 20 April 2026
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