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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 911 Turbo 3.3
Valuation · Porsche · 930 · 1978-89

Porsche 911 Turbo 3.3

3.3L single-turbo air-cooled flat six · 221 kW / 412 Nm · 4sp manual · RWD
CONSIDERRated within the over $100k band · 69 of 104 at this money
Model value
$300,000
Must gain each year to break even
+6.6%
The projection does not clear it, and nor does most of the library.
CarQuant score
58/100
Scored against the over $100k band, not the whole library
Evidence grade
Thin
One to three recorded Australian sales
$300,000
$256,035 lowhigh $416,440
Calibrated to a thin record
One publishable Australian result: $137,000 for a left-hand-drive 1979 coupe at Shannons in November 2020. The widely quoted $350,000 is a pre-sale estimate midpoint, not a hammer price.

Looking at a 911 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
$300,000
At about 45,000 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 $300,000 · modelled median at five years $331,024
Solid line: the value this library has carriedDashed from 2026: modelled · even money $291,580 to $375,953
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 ($256,035 to $416,440). 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 58/100, ranking 69 of 104 in the over $100k band. Demand durability is the strongest input, risk resilience the weakest.
Running it costs about $17,940 a year (6.0% of value), which is what the economics score measures. All in, including the projected value change, it is $15,695 a year.
The model's five year median is $331,024, a +10.3% move, with the tenth percentile at $256,035.
Value calibrated to a thin record. Treat the level as provisional.
Evidence
Thin2 recorded sales
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.
This value sits above every recorded sale logged for the model. That is the specific error calibration keeps finding, so treat it as a ceiling rather than a mid-point.
Short term (1-5 years)$15,695 a year all in, +10.3% median value move
Long term (10-15 years)Scarcity case already formed
Negotiate from$300,000

Recorded sales

Every recorded observation, and when
4 rows on record
$323k$219k$114k
2021202220232024202520262027
the value this record published, year by yearnow $300ksolddid not sell1 row sits off this scale. Open the list below to see them.1 row is undated and is not plotted
Every row, with its price and note (4) ↓
Library value against the sold record
2 sales · median $169,444
Value $300,000
$137,000$201,888
The library value sits above the highest recorded sale; the evidence note above explains why.
UnknownLorbek Luxury Cars$349,990Asking
ASKING - dealer retail, no date published. 1988 930 Turbo Slant Nose Cabriolet on Lorbek's own recent-sales page. Flachbau is a separate and narrower market from the standard coupe.
Sep 2026Collecting Cars$201,888Sold
SOLD. 7 Sep 2026, Melbourne VIC, 167,712km indicated and believed genuine on the service record. 1982 930 Turbo 3.3, Guards Red over Crema, RIGHT-HAND DRIVE FOUR-SPEED, originally delivered to Malaysia and imported here in November 1994. Matching-numbers engine per the seller. Fabspeed intercooler and custom exhaust with an uprated K27 turbocharger fitted, ORIGINAL KKK TURBO AND INTERCOOLER INCLUDED. AutoArt removed engine and gearbox May 2021 for C/2 camshafts, Fabspeed extractors, full tappet and timing reset, all rockers replaced; new clutch plate and machined flywheel, rear main seal, cam feed and heater hoses, distributor wiring. Gearbox fully rebuilt with new synchros, shift sleeves, third-gear dog teeth and both differential carrier bearings, under 1,500km since. Owner’s manuals, Porsche tool kits, completed Technical Specification Booklet, delivery checklist, service book, master key on its original tag. PPSR clear. THE FIRST VERIFIED RIGHT-HAND-DRIVE 3.3 RESULT THIS RECORD HAS EVER HAD, and the published call of $145,000 was 28.2 per cent under it.
Aug 2023Shannons$350,000Not a sale
NOT A SALE - pre-sale estimate only. 1985 930 Turbo 3.3, Shannons Timed Online 15-22 Aug 2023, published estimate A$340,000-A$360,000 (midpoint shown here); Australian-delivered, 149,363km, White Gold over dark burgundy leather, electric sunroof. Sold price not published.
Nov 2020Shannons$137,000Sold
SOLD. 1979 930 Turbo 3.3 coupe, left-hand drive, Shannons Spring Online Auction closed 18 Nov 2020.
2 completed Australian sales of 4 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.

Published calls on this car

1 call on this model has been published and settled, and graded against what the car actually made.

Wrong2026-08-31
Sold $201,888 at Melbourne, Victoria, verified. The call was 28.2 per cent low, beyond the ten per cent a line ball allows and $36,888 above the top of its own band.
Called
$145,000
made $201,888 (+28.2%)

Score breakdown

Against the over $100k band median
104 cars in band · ink tick marks the median
Ownership economics30% of total
69/100even
Scarcity25% of total
55/100-10
Demand durability20% of total
78/100even
Liquidity15% of total
52/100+20
Risk resilience10% of total
1/100-33
Sub-scores run 0-100 before weighting; the weighted total is 58/100. 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
69/100
Baseline84 pts
− 6.0% of value a year to run-15 pts
Sub-score (baseline plus drivers, clamped 0-100)69 pts
Scarcity25% weight
55/100
Baseline20 pts
+ 285 survivors estimated in Australia+35 pts
Sub-score (baseline plus drivers, clamped 0-100)55 pts
Demand durability20% weight
78/100
Baseline62 pts
+ The widowmaker badge and the car the eighties are remembered by+16 pts
+ An estimated 135 delivered new here, weighted to the last years+10 pts
− Between 45 and 60 per cent of the local pool is imported-10 pts
Sub-score (baseline plus drivers, clamped 0-100)78 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
1/100
Baseline44 pts
− Detonation damage means a $60,000 engine rebuild-16 pts
− The 1989 G50 five-speed and the four-speed are different markets-12 pts
− The $350,000 everyone quotes is an estimate, not a sale-8 pts
− Thin transaction record-7 pts
Sub-score (baseline plus drivers, clamped 0-100)1 pts
Model output, not advice or a valuation. Verify independently before acting.

What it costs to own · about 2,500 km a year

Annual cost of access, excl. fuel
$17,940a year
Share of value per year
6.0%
Scheduled servicing$4,04023%
Tyres, annualised$2,75015%
Registration and CTP$2,15012%
Insurance$5,12029%
Sinking fund (failure table)$3,88022%
All-in annualised (a different number)
Purchase (model value plus duty)$312,000
Running costs × 5 years$89,700
Median exit, net of selling cost$323,224
All-in annualised over 5 years$15,695/yr
Share of value per year5.2%
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
6.6%a year, only to get the money back
This library projects
+2.0%a year
The projection falls 4.6 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$300,000
Stamp duty$12,000
Running costs x 5 years$89,700
Selling cost at exit, 2.6% of the salescales with price
Sale price needed at +5 years$412,423
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

Engine3.3L single-turbo air-cooled flat six
Power / torque221 kW / 412 Nm
0-100 km/h5.3 s
Transmission4sp manual
DriveRWD
Kerb weight1,320 kg
Built worldwide18,770
Delivered to Australia135
Effective AU survivors285
Australian sales / year22
Typical days on market75 days
Launch priceNot established

What moves the price on this model

Colour hierarchy
Original paint, unresprayed+10%
White Gold over dark burgundy, a documented Australian specification+3%
Resprayed over repaired arches-12%
Options
MY1989 G50 five-speed rather than the four-speed+50%
Australian delivery, documented+30%
Original engine, never rebuilt after detonation+25%
Odometer sensitivity±1.9% per 10,000 km vs 45,000 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
$331,024
+10.3% on today
The model's figure. Today it is $300,000.
Even odds it lands between $291,580 and $375,953.
$256,035 lowhigh $416,440
The shaded range is even money and 29% 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 59% of the library.
-26.6% weakest projected move in the librarystrongest +73.1%
Five-year cost of ownership
Value change alone: +$31,024 across five years.
Running costs over the same period: $89,700.
Duty and expected selling costs: $19,800.
Net cost of five years of ownership: $78,475, or $15,695 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

Australian 930 money roughly doubled between 2018 and 2023, and the flattening since 2024 has been confined to imported and four-speed cars rather than Australian-delivered G50s. Australia visibly ran ahead of the estimate book on this model, which is what a market with more buyers than cars looks like.

The case against

The only published Australian result is $137,000 for a left-hand-drive 1979 car in November 2020, and the value here is $300,000. Detonation writes off a 930 engine at $60,000 to rebuild, and rust repair on the wide-arch body is $47,500.

Known faults and risks

Risk 1The single publishable local result is a left-hand-drive car from 2020
Risk 2Detonation damage, and a replaced or rebuilt engine costs 20 to 30 per cent
Risk 3Rust repair and respray of the wide-arch body runs to $47,500
Full engine rebuild after detonation damage - 930 engines cost materially more than a 3.2$60,000
Rust repair and respray of the wide-arch body$47,500
Head gaskets or cracked heads from detonation, top-end rebuild$20,000
Type 930 4-speed gearbox rebuild$11,000
KKK turbocharger rebuild or replacement, plus cracked intercooler$9,000
Brake overhaul - 917-derived cross-drilled discs and calipers$7,000

Similar cars, and what they cost to run

Evidence behind this valueThin · 2 recorded sales
Carried value
$300,000
Historical price
2016 · $222,0002026 · $300,000
Thin
At least one recorded transaction plus a source. Direction is sound, the exact level less so.

REVALUED? NO.

The September 2026 hammer confirmed the carried value and convicted the call instead

On 7 September 2026 a 1982 3.3 made $201,888 at Melbourne — the first verified right-hand-drive 3.3 result this record has ever had, against a published call of $145,000 that was 28.2 per cent under it. The instinct on a miss that size is to cut the value. Work it through and the opposite is true. Unwind that hammer through this record's own two hardest terms and nothing else: the distance coefficient of 1.9 per cent per 10,000 kilometres against the 45,000 this entry expects, and the twelve per cent this library docks an import on a model Porsche sold here new. At 167,712 kilometres the distance term is minus 23.3 per cent, and undoing both lands at $299,171 against a carried $300,000.

Read the rest of the evidence notes (7 more)
Read that with the caveat it needs

The model will not actually use minus 23.3, because it caps any odometer adjustment at twelve per cent either way; at the cap the same unwind gives $229,418. The $299,171 is what this record's stated coefficient implies with the cap lifted, not what the valuer outputs, and quoting it without saying so would be picking the convenient rate.

Nor is it a full reconciliation

No allowance is made in it for the four-speed gearbox, and this entry states that a G50 five-speed is worth 40 to 60 per cent over one, nor for the turbo and exhaust conversion. Both of those would push the implied base for a stock five-speed car higher again, which leaves two live readings and the record does not yet choose between them: either $300,000 is conservative for a documented Australian-delivered five-speed, or the 1.9 per cent distance coefficient is too steep and is doing work the gearbox and origin terms should be doing.

The error was in the call, not in the number above it

The call took a 52 per cent discount off the carried value. The car's own cells — high distance, import, four-speed, converted turbo — account for the gap between the two figures almost exactly. The discount was applied twice.

The number everyone quotes on this car was never paid

Shannons ran a 1985 Australian-delivered 930 Turbo 3.3 in its timed online auction of 15 to 22 August 2023 - 149,363km, White Gold over dark burgundy leather, electric sunroof - with a published estimate of $340,000 to $360,000. The sold price was never published, Shannons left the auction business that November, and the archive was stripped, so the $350,000 in circulation is a midpoint of an estimate. It is not a result and it does not set this value.

What was actually paid, once

A left-hand-drive 1979 coupe made $137,000 in the Shannons Spring Online auction closing 18 November 2020. Different specification, different steering side, different point in the cycle; it brackets the bottom rather than describing the middle. The only other local figure is a $349,990 dealer asking price on a 1988 Slant Nose Cabriolet, and Flachbau cars are a separate and narrower market from the standard coupe.

The gearbox is the biggest single variable in this tranche

The MY1989 G50 five-speed is worth 40 to 60 per cent over an equivalent four-speed, Australian delivery a further 25 to 35, and a replaced or rebuilt non-original engine costs 20 to 30. With an estimated 45 to 60 per cent of local 930s imported from the United States, Britain and Japan, any single number on this model is really a number for one cell of a four-way grid.

The direction is the confident part and the level is research
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 911 Turbo 3.3 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$300,000
Half of sales are further out than$33,537
The report$249
135×
the price of the report: what half of real sales of this model sit further from this page's number than, on this car
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