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Price opinion from advertisements and recorded sales. Not an inspection or a certified valuation.
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Reference photograph of a Porsche 718 Cayman GT4
Valuation · Porsche · 982 · 2020-24

Porsche 718 Cayman GT4

4.0L NA flat six · 309 kW / 420 Nm · 6sp manual · RWD
CONSIDERRated within the over $100k band · 43 of 104 at this money
Model value
$225,000
Must gain each year to break even
+6.3%
The projection does not clear it, and nor does most of the library.
CarQuant score
63/100
Scored against the over $100k band, not the whole library
Evidence grade
Thin
One to three recorded Australian sales
$225,000
$187,181 lowhigh $346,406
Calibrated to a thin record
One Australian result: $226,000 in July 2023 for a 3,947km PDK Clubsport, about $19,000 above its Australian list. These prices reach this library through a third-party compiler rather than from the selling house: Collecting Cars publishes the car, the date, the suburb, the odometer and the condition report, and puts the final figure behind a login. They are carried as evidence on that basis and the provenance is stated here so it can be weighed.
Measured across this library, a value resting on a single Australian result runs high about six times in ten, by a median of five per cent.

Looking at a 718 Cayman for sale?

Put in the asking price and the odometer reading. You will see what this model should make at that reading.

Should make, typical example
$225,000
At about 21,000 km. Enter an asking price to compare.

Odometer only. Colour, options, history, condition and the photographs move it further, and that is what the report reads.

A person reads the advertisement and its photographs. Usually back within 48 hours. Read a real listing report

Price history

Today $225,000 · modelled median at five years $258,832
Solid line: the value this library has carriedDashed from 2026: modelled · even money $221,144 to $304,896
The green band is the even-money range and the one to plan on: half of outcomes land inside it. The pale band behind it bounds eight in ten ($187,181 to $346,406). The path is this model's own: it starts along the momentum of its recorded history and bends toward its projected median as the horizon lengthens, so no two cars share a future curve.

The verdict

A defensible case with reservations. Scores 63/100, ranking 43 of 104 in the over $100k band. Demand durability is the strongest input, risk resilience the weakest.
Running it costs about $12,800 a year (5.7% of value), which is what the economics score measures. All in, including the projected value change, it is $9,004 a year.
The model's five year median is $258,832, a +15.0% move, with the tenth percentile at $187,181.
Value calibrated to a thin record. Treat the level as provisional.
Evidence
Thin1 recorded sale
Off its peak
at peak
Value band
wide
At least one recorded transaction plus a source. Direction is sound, the exact level less so.
Scored against every recent Australian sale this library holds, half its values land within 11.2 per cent of the price paid and the rest miss by more, in either direction. Projections are therefore damped toward flat in proportion to how little is known, and the plausible band is never narrower than the error the model is known to make.
Short term (1-5 years)$9,004 a year all in, +15.0% median value move
Long term (10-15 years)Scarcity case already formed
Negotiate from$225,000

Recorded sales

Every recorded observation, and when
2 rows on record
Every row, with its price and note (2) ↓
Jun 2026AutoMarketsNo saleNot a sale
NOT A SALE. D 30 Jun 2026. A further 982 GT4 was offered at Australian auction and failed to sell; a no-sale at this point is a soft-market signal.
Jul 2023AutoMarkets$226,000Sold
SOLD. D 17 Jul 2023, Paddington NSW, 3,947km. 2021 car, 7-speed PDK, black over black, first registered September 2021, Clubsport package with roll cage, harnesses and fire extinguisher, Sport Chrono, PASM, sports exhaust, PCM nav. About $19,000 above its $206,600 list.
1 completed Australian sale of 2 rows. Rows marked asking, no sale, or context are shown for honesty but do not count toward the evidence grade: an ask is not a transaction, a pass-in is a refusal, and a provenance or overseas result does not price the ordinary local car. The badge on every row is computed by the same rule as the grade, so the two cannot drift apart.

Score breakdown

Against the over $100k band median
104 cars in band · ink tick marks the median
Ownership economics30% of total
70/100+1
Scarcity25% of total
58/100-7
Demand durability20% of total
82/100+4
Liquidity15% of total
52/100+20
Risk resilience10% of total
29/100-5
Sub-scores run 0-100 before weighting; the weighted total is 63/100. Medians are computed live from the 104 cars currently in the over $100k band, so this picture moves when the library does.
The working behind each factor: baseline and drivers ↓
Ownership economics30% weight
70/100
Baseline84 pts
− 5.7% of value a year to run-14 pts
Sub-score (baseline plus drivers, clamped 0-100)70 pts
Scarcity25% weight
58/100
Baseline20 pts
+ 160 survivors estimated in Australia+38 pts
Sub-score (baseline plus drivers, clamped 0-100)58 pts
Demand durability20% weight
82/100
Baseline66 pts
+ A naturally aspirated 4.0 flat six with three pedals+14 pts
+ About one hundred and sixty cars came to Australia+10 pts
− A mid-2026 no-sale says the bid is not unconditional-8 pts
Sub-score (baseline plus drivers, clamped 0-100)82 pts
Liquidity15% weight
52/100
Baseline12 pts
+ 75 days on market+28 pts
+ 22 sales a year+12 pts
Sub-score (baseline plus drivers, clamped 0-100)52 pts
Risk resilience10% weight
29/100
Baseline58 pts
− Manual and PDK cars are separated by $10,000 to $20,000-8 pts
− A retrofitted Clubsport cage can complicate registration-8 pts
− Carbon-ceramic rotors are a $30,000 consumable-6 pts
− Thin transaction record-7 pts
Sub-score (baseline plus drivers, clamped 0-100)29 pts
Model output, not advice or a valuation. Verify independently before acting.

What it costs to own · about 5,250 km a year

Annual cost of access, excl. fuel
$12,800a year
Share of value per year
5.7%
Scheduled servicing$2,88023%
Tyres, annualised$1,96015%
Registration and CTP$1,54012%
Insurance$3,65029%
Sinking fund (failure table)$2,77022%
All-in annualised (a different number)
Purchase (model value plus duty)$234,000
Running costs × 5 years$64,000
Median exit, net of selling cost$252,982
All-in annualised over 5 years$9,004/yr
Share of value per year4.0%
Cost of access is what the car costs to run. All-in annualised adds depreciation, duty and selling costs across a five year hold. They answer different questions and are labelled separately for that reason.
Break-even appreciation, 5 year hold
6.3%a year, only to get the money back
This library projects
+2.8%a year
The projection falls 3.5 points a year short of the hurdle. On these assumptions this car is a cost, not an asset, which can be an entirely rational thing to buy but should be bought knowing it.
Purchase$225,000
Stamp duty$9,000
Running costs x 5 years$64,000
Selling cost at exit, 2.6% of the salescales with price
Sale price needed at +5 years$305,955
Storage
Bought at
No forecast is used to compute the hurdle. It is the purchase, the duty, any premium and 5 years of running cost, grossed up for the cost of selling and spread back over the hold. The projection it is measured against is the weakest number in this product and is drawn that way in the chart above. Transport, finance and any restoration spend sit outside it.

Specification

Engine4.0L NA flat six
Power / torque309 kW / 420 Nm
0-100 km/h4.4 s
Transmission6sp manual
DriveRWD
Kerb weight1,420 kg
Built worldwideNot established
Delivered to Australia160
Effective AU survivors160
Australian sales / year22
Typical days on market75 days
Launch price$206,600

What moves the price on this model

Colour hierarchy
Original paint, unresprayed+5%
A factory special colour rather than a standard one+4%
Repainted panels after track damage-8%
Options
Six-speed manual rather than the MY2022-on PDK+8%
Carbon-ceramic brakes with rotors inside wear limits+5%
Clubsport package with the cage engineered and insurable+4%
Odometer sensitivity±1.9% per 10,000 km vs 21,000 km
Applied on top of these

Condition, history, originality, ownership, delivery and modification multipliers apply to every car in the library. They are applied automatically when an advertisement is analysed, and the schedule is set out once, on the analyser page.

Projected value in five years

Projected value at five years
$258,832
+15.0% on today
The model's figure. Today it is $225,000.
Even odds it lands between $221,144 and $304,896.
$187,181 lowhigh $346,406
The shaded range is even money and 38% wide; the outer figures bound eight outcomes in ten. Band width follows the evidence - a model with a tight measured record carries a tight band.
A stronger five year outlook than 72% of the library.
-26.6% weakest projected move in the librarystrongest +73.1%
Five-year cost of ownership
Value change alone: +$33,832 across five years.
Running costs over the same period: $64,000.
Duty and expected selling costs: $14,850.
Net cost of five years of ownership: $45,020, or $9,004 a year.
The projected value rise offsets part of the running cost. It does not make the car free to own.

The case for and against

The case for

Roughly 160 came to Australia at $206,600 and the only local figure available, a 2021 PDK car at 3,947km, sits about $19,000 above that list. A naturally aspirated 4.0 flat six with a six-speed manual is not something Porsche is going to build again.

The case against

The one local figure is three years old and a further 982 GT4 failed to sell at Australian auction in June 2026, which is what a plateau looks like from underneath. Carbon-ceramic rotors are $30,000 to replace and a particulate filter clogged by short trips is a $5,000 job.

Known faults and risks

Risk 1A retrofitted Clubsport cage can complicate registration and insurance
Risk 2GPF clogging on MY2021-on cars used for short trips
Risk 3Australian delivery volume is inferred, not published
PCCB carbon-ceramic rotors, if optioned, replacement$30,000
Clutch on tracked manual cars$7,500
Steel brake discs and pads$7,500
GPF clogging on MY2021-on cars from short-trip use, regeneration or replacement$5,000
Cup 2 tyres, set fitted$4,250

Similar cars, and what they cost to run

Evidence behind this valueThin · 1 recorded sale
Carried value
$225,000
Historical price
2020 · $186,8002026 · $225,000
Thin
At least one recorded transaction plus a source. Direction is sound, the exact level less so.
One Australian figure, and a no-sale underneath it

In July 2023 a 2021 PDK car with 3,947km, black over black with the Clubsport package, Sport Chrono and PASM, is recorded at $226,000, about $19,000 above its $206,600 Australian list. It is carried as the single local result it is, and one delivery-mileage PDK car in July 2023 sets a ceiling rather than a value. In June 2026 a further 982 GT4 was offered at Australian auction and failed to sell. One figure three years old and one recent failure is not a series, but together they are enough to say the model appreciated above list and has since stopped.

Read the rest of the evidence notes (3 more)
Gearbox is the largest single variable

PDK arrived from MY2022 and the manual should carry $10,000 to $20,000 over it, which on a $225,000 car is between four and nine per cent and wider than most condition differences. The one local figure available is a PDK car, so read it as understating a manual.

The surrounding numbers are estimates

VFACTS reports the 718 Cayman as a single line and does not break out the GT4, so the Australian delivery figure is inferred, and Porsche publishes no production total.

Check the cage and the filter

A retrofitted Clubsport cage can create registration and insurance complications in some states, and a clogged particulate filter on a MY2021-on car is $5,000.

This page prices the model.
The report prices the car in the advertisement.

Send the link. A person reads the advertisement and its photographs and sends back what that Porsche 718 Cayman GT4 is worth, what to offer and when to walk away, with five years of costs at the distance you drive.

Read a real listing report

The evidence on this model is thin and the report says so on its cover. Read a complete one on a real car first. Seventeen sections, no account, nothing to pay.

This model, today$225,000
Half of sales are further out than$25,153
The report$249
101×
the price of the report: what half of real sales of this model sit further from this page's number than, on this car
Watch this model
Told when the next one is called.

One line of email when this desk publishes a call on a Porsche 718 Cayman GT4, or records a new Australian sale of one. Nothing else, no schedule, and on a quiet model you may hear nothing for months, which is itself worth knowing about a car you are chasing.

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718 Cayman for sale?Priced by a person, $249