Porsche Cayman vs BMW 4 Series
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.
Data checked: specs 28 Aug 2026, price 24 Jun 2026
Driver assistance, as the maker lists it
Swipe across. Tap a feature to see what it does and each car's source.
StandardOptional: printed price, +pack or NCO (no-cost)No, not offeredNo dataCounts beside each car use the same colours; ? is no option data.
From each manufacturer's Australian equipment list. No data means that car's document does not say. The drawings are our own illustrations of how each kind of system works.
Porsche Cayman: we're still completing price, height, 0-100km/h, warranty and ground clearance, plus 2 others.
A blank cell below means we don't have that figure, not that the car scores badly on it. We leave them empty rather than estimate, so any row where one car is blank isn't a like-for-like comparison yet.
No price
- no option data for this car
$83,500RRP
- with the Porsche Cayman's standard kit: $83,500 (nothing to add)
Printed option prices only. A pack is counted once and makes the figure a floor when it carries no printed price. Nothing is inferred from the other car.
Track the Porsche Cayman & BMW 4 Series
Get price-drop alerts on these models plus our free weekly new-car rundown. Unsubscribe anytime.
Price Breakdown
Pricing for one or both models is yet to be confirmed for the Australian market. We will update this comparison when official RRPs are announced.
Safety Rundown
ANCAP safety ratings have not been published for both models yet. We will update this section when crash test results are available.
Recalls on our record
Porsche Cayman
- REC-004963 · published 29 Sep 2021Due to a manufacturing defect, the rear suspension may fail in extreme driving situations.Year range on the notice: 2012 - 2013; 2014
- REC-001155 · published 26 Sep 2019An airbag control unit with an out of specification capacitor for maintaining power supply may have been installed on the affected vehicles.Year range on the notice: 2015 - 2016
- REC-001151 · published 10 Mar 2019In a frontal collision, the lower longitudinal crash beam in the luggage compartment area could penetrate the bulkhead wall at the lower cross body component.Year range on the notice: 2016 - 2019
BMW 4 Series
- REC-006668 · published 16 Jul 2026Due to a manufacturing defect, the starter motor solenoid switch can experience increased wear that could cause an internal short circuit.Year range on the notice: 2020 - 2025
- REC-006553 · published 4 Mar 2026Due to a manufacturing defect, the Exhaust Gas Recirculation (EGR) cooler may develop an internal coolant leak.Year range on the notice: 2010 - 2022
- REC-006539 · published 17 Feb 2026Due to a manufacturing defect, the starter motor solenoid switch can experience increased wear that could cause an internal short circuit.Year range on the notice: 2020 - 2023
- 2 more on the model page.
A recall covers the builds its notice lists, not every car of a model. Check your VIN at vehiclerecalls.gov.au.
Feature Showdown
Both come with modern infotainment systems.
The BMW 4 Series counters with wireless Apple CarPlay/Android Auto. Which feature set matters more depends on your daily routine and priorities.
Drivetrain
The Porsche Cayman uses a Petrol producing 239kW and 370Nm of torque, sent through a 7-speed pdk dual-clutch to a RWD layout.
The BMW 4 Series responds with a Petrol making 135kW and 300Nm, paired to a auto driving the rear wheels. It gets to 100km/h in 7.5 seconds.
The Porsche Cayman has the clear power advantage at 239kW vs 135kW. For most buyers, the way each car feels day-to-day matters more than outright acceleration.
Space & Comfort
The Porsche Cayman measures 4,380mm long on a 2,475mm wheelbase, 390mm shorter than the BMW 4 Series at 4,770mm (2,851mm wheelbase). The longer wheelbase on the BMW 4 Series generally means more rear legroom.
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
Interactive simulator: U-turns, parking & towing
Turning Circle
Kerb-to-kerb diameter. Smaller turns are easier in tight carparks and U-turns.
Average
Needs a 3-point turn (one reverse)
Needs about 9.9 m to swing round without stopping. Road is 9.0 m.
U-turn on a wide street
≥ 10 m: clears in one
U-turn on a standard street
7 m: 3-point turn
Standard parking bay
1.9 m wide: fits with room
Tight carpark aisle
6 m: swings in
Narrow laneway
3.5 m: no room to turn
Turning circle ratings
Standard widths: AU local streets carry ~5.5–7 m of carriageway; main roads ~9–12 m. AS 2890.1 carpark aisles are ~5.8–6.6 m for 90° bays (2.6 m wide × 5.4 m deep).
Road, aisle, swing and off-tracking figures are indicative estimates from the published turning circle. Verify in person before relying on them.
True Cost to Own
Based on 15,000km of annual driving, fuel costs roughly $2,280/year for the Porsche Cayman and $1,824/year for the BMW 4 Series. That is a $456 annual difference in favour of the BMW 4 Series.
Who Should Buy Which?
Buy the Porsche Cayman if: You prioritise performance, or prefer Porsche's approach to design and ownership experience.
Buy the BMW 4 Series if: You want lower running costs, or prefer BMW's approach to design and ownership experience.
The Verdict
The CarSorted Score calls this a draw (48 vs 68). The Porsche Cayman and BMW 4 Series trade blows across the spec sheet, and neither runs away with an outright win. The BMW 4 Series will save you roughly $456 a year in fuel. The best pick depends on what you value most. Explore the full specs for each model below.
Common questions
Which is cheapest, Porsche Cayman and BMW 4 Series?
The BMW 4 Series is the cheapest at $83,500 before on-road costs.
Which is the most fuel-efficient?
The BMW 4 Series uses the least fuel at 6.4L/100km on the combined cycle.
What are the ANCAP safety ratings?
None of Porsche Cayman and BMW 4 Series carry a published ANCAP rating yet, so there is no crash result to compare. Check back as they are tested.
Which can tow the most?
The BMW 4 Series has the highest braked towing capacity at 1,800kg.
Which is the most powerful?
The Porsche Cayman makes the most power at 239kW.
Stay across the market
Get our weekly new-car rundown of launches, price moves, deals and reviews, straight from the data.
- Weekly new-car rundown
- Price cuts and new deals
- New launches and reviews
No spam, unsubscribe anytime. By subscribing you agree to receive marketing emails.
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!
