Youngtimer Car Collective · Research Dossier 2026

Porsche 924 & 944
The Transaxle Record

Every production variant, homologation special, and racing machine from the 1976–1991 transaxle era. All figures cross-referenced. All source conflicts declared.

152,082
924 family produced
173,238
944 family produced
1976–1991
Production span
1
GTP prototype (Museum)
Section 01

Complete Model Family

924 · 924 Turbo · 924S · 944 · 944S · 944 Turbo · 944 S2
Model Years Engine Power Production
924 (base)
EA425 project · Harm Lagaay design
Road
 1976–852.0L EA83195–125 hp
121,289
924 Turbo
Internal code: 931
RoadTurbo
 1979–832.0T EA831170–177 hp
13,616
924S
944 engine in 924 body
Road
 1986–882.5L M44/40150–160 hp
~16,800
est.
Edition Year Market Units Confidence
Martini Championship Edition
Option M426 · Police White + Martini stripes
 1977Global
3,000
 Confirmed
Limited Edition
Options bundle · 1978 MY
 1978Global
Unknown
 Unverified
Sebring Edition
Guards Red · tartan seats
 1979US only
~1,292
 Single source
Turbo USA Edition
Dolomite Grey · tartan interior
 1979US only
600
 Confirmed
Le Mans Edition
Option M426 · white · Le Mans stripes
 1980Global
1,030
 Confirmed
Weissach Commemorative Edition
Option M459 · Platinum Metallic
 1981US only
400
 Confirmed
Turbo Italia Edition
Zermatt Silver · Porsche Logo interior
 1983Italy focus
88
 Confirmed
924S Le Mans Edition
Black or White · 911 Turbo seats
 1987Global
980
 Confirmed
924S Special Edition (Club Sport)
M-756 (US) · M-755 (DE/ROW) · factory stripped
 1988500 US + 480 ROW
980
 Confirmed
Model Years Engine Power Production
944 (base)
M44/40 · M44/12 (2.7L 1989)
Road
 1982–892.5L / 2.7L163–165 hp
113,070
944 S (16-valve)
M44/40 DOHC · "16 Ventiler"
Road
 1987–882.5L DOHC 16v190 hp
~12,831
944 Turbo
Internal: 951 · M44/51 · Geneva debut 1985 / US launch 1986 MY
RoadTurbo
 1985–912.5T M44/51–52220–250 hp
25,245
944 S2
M44/41 · 3.0L DOHC 16v
RoadCabriolet
 1989–913.0L M44/41208 hp
19,945
disputed
Edition / Variant Year Market Units Confidence
944 Callaway Turbo
Factory-sanctioned conversion · US only
 1983US only
20
 Confirmed
944 Turbo Cup (race)
VIN 1501–1700 · 99 CAN / 93 ROW
Race
 1986–88Canada + ROW
192
 Confirmed
944 Turbo S
M44/52 · Silver Rose · M030 · LSD
Limited
 1988Global
1,635
 Confirmed
944 Celebration Edition
M757 · Zermatt Silver or Satin Black · fog lights
 1988500 US · 430 DE/ROW
880–930
 See conflicts
944 S2 Cabriolet (1989 US)
First-year US delivery · ASC Weinsberg build
 1989US first year
16
 Confirmed
944 Turbo Cabriolet
M44/52 · 100 RHD / 525 LHD · No US market
Never USFinal 944
 1991EU/UK/AUS/SA/JPN
625
 Confirmed
944 S2 SE (Special Edition)
UK only · final months of production
Last 944 special
 1991UK only
15
 Confirmed
Section 02

Production Numbers

Cross-referenced · All markets · 1976–1991
Sources: Base 924 year totals confirmed via VIN cross-reference (Porsche Forum / GermanAutoForums, 2005, citing factory data). 924 Turbo breakdown from same source. 924S total is implied from family aggregate of 152,082 (StuttCars). Total family: StuttCars primary.
YearROWUSAJapanYear Total
1976 — base5,145——
5,145
1977 — base (incl. 3,000 Martini)17,6757,496425
25,596
1978 — base9,47411,638450
21,562
1979 — base + Turbo launch10,475+1,9829,636+950508
23,551
1980 — base (incl. Le Mans) + Turbo9,094+1,8033,700+3,440—
18,037
1981 — base (incl. Weissach) + Turbo9,669+1,7832,155+1,529—
15,136
1982 — base + Turbo7,8142,277+876943
11,910
1983 — base + Turbo final5,785+310——
6,095
1984 — base4,659——
4,659
1985 — base final (ROW)3,214——
3,214
1986 — 924S launch (ROW only)~5,000 est.——
~5,000
1987 — 924S (incl. Le Mans Ed.)~3,400 est.~2,800 est.—
~6,200
1988 — 924S final (incl. SE/Club Sport)~2,600 est.~2,800 est.—
~5,400
924 Family Grand Total152,082
Sources: Base 944 (113,070) and Turbo total (25,245) confirmed: Porsche Mania citing factory data. 944 S: 12,831 (Porsche Mania) / 12,936 (Frazerpart factory records) — minor 105-unit discrepancy noted. 944 S2: factory data from Rennlist VIN study = 19,945; Porsche Mania = ~14,071. Discrepancy flagged.
YearVariantUS exportsTotal
1982944 base~6,500
~11,000
1983 (incl. 20 Callaway Turbo)944 base~12,000
~18,000
1984944 base~14,000
~21,000
1985 / 1985.5944 base (oval dash refresh)~11,000
~18,500
1985 (Geneva debut; ~178 EU only — no US)944 Turbo launch (EU only)0
~178
1986 (Turbo full US market launch)944 base + Turbo (full year) + 944 S launch (ROW)~7,000+~3,200
~21,900
1987944 base + Turbo + 944 S (full year)~4,000
~25,100
1988base + Turbo (incl. 1,635 Turbo S) + S + Celebration~2,000
~17,000
1989944 2.7L (final) + Turbo + S2 launch~700+~2,700
~13,200
1990Turbo + S2 coupe + S2 Cab~2,273+~1,824
~8,510
1991Turbo (incl. 625 T-Cab) + S2 coupe + S2 Cab + S2 SE~1,072
~5,979
944 Family Grand Total173,238
944 base coupe1982–1989
113,070
944 Turbo (all)1985–1991 incl. Turbo S
25,245
924 base (2.0L)1976–1985
121,289
944 S2 (coupe+cab)1989–1991 · disputed
~19,945
924S (2.5L)1986–1988 · estimated
~16,800
944 S (16v)1987–1988
~12,831
924 Turbo (931)1979–1983
13,616
944 Turbo S onlywithin 1988 MY Turbo
1,635
944 Turbo Cabriolet1991 · no US
625
924 Carrera GT (937)Homologation road car
406
Section 03

Top 10 Rarest — Road Cars

Customer-deliverable · road-registered variants only
Ranking methodology: Total confirmed worldwide production, customer-deliverable, road-registered variants only. Race-only and factory prototype cars ranked separately in Section 04. Multiple independent sources required for inclusion. Click any card for full detail.
1
924 Carrera GTS Clubsport
1981 · All LHD · 270 hp · Aluminium roll cage, 6-pt harness, fire suppression, kill switch. Rarest customer-sold 924 ever made. Confirmed subset of 59 total GTS.
Rarest road 924Homologation
15units
2
944 S2 SE — UK only special edition
1991 · UK market only · Last 944 special ever produced. Built in final months of 944 output. Almost entirely absent from collector literature.
Last 944 specialUK only
15units
3
944 Callaway Turbo
1983 · US only · 20 factory-sanctioned Callaway conversions. Predates the official 944 Turbo by two years. First forced-induction 944 available to buyers.
Factory-sanctionedUS only
20units
4
924 Turbo Italia Edition
1983 · Italy focus · Zermatt Silver · Porsche Logo interior (burgundy or grey). Rarer than the Carrera GT. Essentially unknown outside Italian enthusiast circles.
Italy only
88units
5
944 S2 Cabriolet — 1989 US (first-year)
1989 · US market · Production started May 1989 — only 16 US-spec cars completed before model-year close. Total S2 Cab across all years/markets: ~6,059.
First-year onlyUS only
16US '89
6
924 Carrera GTS (complete family)
1981 · All LHD · 59 total: 42 standard, 15 Clubsport, 2 comfort. 245 hp (std) / 270 hp (CS). Plexiglas headlights. All left-hand drive only.
Homologation59 total
59units
7
944 Turbo Cabriolet — RHD only
1991 · UK/AUS/SA/Japan · 100 RHD within 625 total. 250 hp. Never homologated for North America. Last 944 variant ever produced. ASC-built body.
Never USLast 944 ever
100RHD
8
924 Carrera GT (type 937)
1980 · 406 road cars + 6 protos · 75 RHD for UK · 210 hp intercooled turbo · GRP composite panels · VIN code 93ZBN7 · Group 4 homologation
Homologation75 RHD
406road cars
9
944 Turbo Cabriolet — all markets
1991 · EU/UK/AUS/SA/JPN · 625 total: 100 RHD + 525 LHD. Announced 600 cars, 625 produced. No US market. 250 hp Turbo S drivetrain.
Open Turbo SNo US
625total
10
924S Special Edition (Club Sport)
1988 · M-756 US (500 black) + M-755 ROW (480) · Factory stripped: no A/C, manual windows, Koni suspension. SCCA Showroom Stock homage. 980 worldwide.
Club SportSCCA ready
980worldwide
Section 04

Top 10 Rarest — Race & Track Cars

Factory race vehicles · homologation racers · track-only builds
Ranking note: Factory prototype/museum cars ranked by historical significance, not just volume. Race cars that were never offered for road registration are treated as a distinct category. Customer race cars eligible for road use (e.g. Carrera GTR with lights/passenger seat) are ranked here because they were sold to and registered by customers — but not as conventional road cars.
1
924 GTP — 1981 Le Mans (944 engine prototype)
The most historically important transaxle car in existence. 410 hp DOHC prototype 2.5L engine — the direct ancestor of the 944 road car engine. Barth/Röhrl. 7th overall, GTP class winner. Now in Porsche Museum permanently. Factory-only; never sold.
Porsche Museum944 engine proto
1factory only
2
924 Carrera GTP — 1980 Le Mans (3 race + 3 test)
6 total. 3 Le Mans entries in national liveries (British, American, German). 14-pt roll cage by Norbert Singer. 320 hp. 6th/12th/13th overall. World-first TPMS at Le Mans. 3 test/evaluation units. Factory-only.
Le Mans 1980TPMS world first
6factory only
3
924 D-Production (project 933)
16 factory SCCA D-Prod racers. Internal code 933. 185 hp. Won SCCA National Championship 1980 (Doc Bundy) and 1981. Available as a parts kit to privateers for ~$40,000. D-Prod class discontinued early 1980s.
SCCA Champion
16factory build
4
924 Carrera GTR
17 customer cars. VINs ZBS720001–022 (with gaps). 375 hp, 930 kg, 290 km/h. Centre-lock BBS. 935-derived axles. 180,000 DM. IMSA GTO winner Le Mans 1981 + 1982 (BF Goodrich on street tyres in 1982).
IMSA GTO winner17 total
17customer
5
944 Turbo Cup race car
192 total. 99 Canada + 93 ROW. VIN digits 1501–1700. −272 kg. Magnesium sump/manifold. 250–290 hp. 8-pt cage. First Porsche one-make series (1986). Groundwork for Carrera Cup.
One-make pioneer192 total
192total
6
924 Carrera GTR — 1981 Le Mans factory entry
1 factory GTR entered at Le Mans 1981, distinct from the 17 customer cars and the GTP. Finished 11th overall. Runs between customer GTR and GTP specification. Factory-only entry.
Le Mans 1981Factory only
1factory
7
924 Carrera GTS Clubsport (dual classification)
15 units. Road-registered but race-ready from factory: aluminium roll cage, 6-pt harness, fire suppression, kill switch. 270 hp. Genuine dual-category car — also #1 in road rarity ranking above.
Race-ready road car15 total
15dual class
8
924 Fabcar/Klym GTRs (US market)
7 US-market GTRs built by Dave Klym/Fabcar under Al Holbert. Factory-sanctioned. Raced SCCA, IMSA, Trans-Am. Distinct from European 17-car customer GTR build. One car driven by Paul Miller.
IMSA/Trans-AmUS market
7US only
9
944 Turbo Cup — Canadian Rothmans series cars
Subset of the 99 Canadian Turbo Cup builds. Canadian Tire Rothmans livery. Among the most historically documented one-make cars in Canadian racing. Raced mid-1980s through early 1990s.
Rothmans liveryCanadian series
~50est.
10
924 D-Production — privateer kit conversions
Beyond 16 factory builds: Porsche sold the 933 kit to selected privateers for ~$40,000. Includes stripped shell, factory cage, race suspension, 185 hp spec engine. Count uncertain; documented Holbert/Porsche provenance required.
SCCA D-ProdKit conversion
~20+est.
Section 05

Motorsport Record

1979–1992 · SCCA · Le Mans · IMSA · Porsche Cup
1979
SCCA · USA

924 D-Production programme begins

16 factory 933 kit cars produced. Porsche enters SCCA D-Production category. Cars win the D-Prod National Championship in 1980 (Doc Bundy, Al Holbert car) and 1981 (Tom Brennan).

SCCA D-Prod Champion 1980 · 1981
1980
Le Mans · GTP Class

924 Carrera GTP — three cars, three nations

Factory entries in British (Dron/Rouse), American, and German (Barth/Schurti) national liveries. All three finish. German car 6th overall, the only factory Porsches entered that year. World-first TPMS fitted.

6th · 12th · 13th Overall — all three finish
1981
Le Mans · GTP + GTR

924 GTP with 944 prototype engine

Factory 924 GTP (Barth/Röhrl) runs the prototype 2.5L DOHC 4-valve engine — the future 944 unit. GTP class win, 7th overall. Customer GTR 11th overall, IMSA GTO class win.

7th Overall · GTP Class Win · IMSA GTO Win
1982
Le Mans · IMSA GTO

BF Goodrich 924 GTR on street tyres

Two privately entered GTRs sponsored by BF Goodrich, running on street tyres. Win IMSA GTO class, 16th overall. Arguably the most remarkable result in 924 motorsport history.

16th Overall · IMSA GTO Class Win · Street tyres
1986
944 Turbo Cup · Europe

Porsche's first one-make championship

944 Turbo Cup series launches — ADAC Supercup support races, Germany. Joachim Winkelhock wins inaugural championship. Armin Schwarz wins 1988. Series blueprint for the Carrera Cup era.

5 national championships · 192 cars built
1986–92
Multi-series · Global

944 in SCCA, IMSA GT and endurance racing

944s compete in SCCA GT2/GT3 and IMSA GTO. Regular Daytona 24h entries. Car & Driver Best Handling Production Car in America 1984, Ten Best list 1983–85 (Turbo 1986). The 944 never needed a race pedigree to sell — it had one.

C/D Best Handling · Ten Best 3 years running
Section 06

Engine Lineage

EA831 → M44/40 → M44/52 → M44/41 · 1976–1991
1972
125 hp

EA831 — 2.0L I4 SOHC (Audi-sourced)

The original engine in the EA425 project. Audi-sourced, cast iron block. Shared with the AMC Gremlin and VW LT van. 95 hp US / 125 hp EU. Criticised as un-Porsche, but the transaxle platform it powered was flawless. VW discontinued the block in 1984, forcing the creation of the 924S.

1979
375 hp

EA831 Turbocharged (931/937) — 2.0T

The same block pushed from 125 hp to 375 hp in GTR trim — over 4× original output. KKK turbocharger, then intercooler added for the GT programme. 170 hp base Turbo; 177 hp revised 1981; Carrera GT 210 hp at 0.75 bar; GTS 245 hp at 1.0 bar; GTR 375 hp dry-sump race spec; GTP Le Mans 320 hp. One of the most dramatic development arcs of any four-cylinder in motorsport history.

1981
410 hp

Prototype 2.5L DOHC 4v Turbo — the bridge to 944

The 1981 Le Mans 924 GTP factory car ran this engine — a DOHC four-valve prototype 2.5L with twin balance shafts and a K28 turbocharger. 410 hp. This is literally the 944 engine in race trim, appearing one year before the 944 road car. The car is now in the Porsche Museum, Zuffenhausen.

1982
163 hp

M44/40 — 2.5L I4 SOHC (944 base)

Porsche's first true purpose-built transaxle engine. Bore 100mm × stroke 78.9mm. All-aluminium construction. Twin Lanchester balance shafts rotate at 2× crank speed, cancelling the second-order vibration inherent to a large inline-four (Mitsubishi patent, licensed by Porsche). 163 PS EU / 143 hp US initially. Evolved to 2.7L in 1989 (M44/12, 165 PS). Drove a 944 500,000 km in one year in 1987 — passed every engineering test.

1985
220 hp

M44/51 — 2.5L I4 Turbocharged (951)

Turbo version of the M44/40. 220 PS, air-to-air intercooler, water-cooled KKK K26 turbocharger. Also first Porsche engine to produce equal power with or without a catalytic converter — a genuine world first. 1987 world first: the US-spec 944 Turbo became the first production car in the world fitted with both driver and passenger airbags as standard (Excellence magazine, Porsche.com). ABS became available on 944 models from 1987. The M44/51 set the benchmark for turbocharged transaxle four-cylinders for a decade.

1987
190 hp

M44/40 DOHC — 2.5L I4 16v (944 S)

DOHC head on the existing 2.5L block — first use of four valves per cylinder in the 944 range. 190 PS at 6,000 rpm, 230 Nm at 4,300 rpm. Optional "16 Ventiler" badge behind side indicators. Only produced 1987–88 before the larger S2 engine superseded it.

1988
250 hp

M44/52 — 2.5L I4 Turbocharged (Turbo S)

The high-output definitive Turbo S unit. 250 PS at 6,000 rpm, 350 Nm at 4,000 rpm. Larger K26/8 turbocharger housing, revised DME, strengthened transmission. Planned for 1,000 units; 1,635 actually produced. Used in: 1988 Turbo S, all 1989–1991 Turbos (when S designation was dropped), and the 1991 Turbo Cabriolet.

1989
208 hp

M44/41 — 3.0L I4 DOHC 16v (944 S2)

The pinnacle of the naturally-aspirated transaxle four-cylinder. Bore 104mm × stroke 88mm = 2,990cc. 211 PS, the largest four-cylinder engine in series production at launch. Pioneered the flush integrated front bumper design adopted industry-wide by the mid-1990s. Legacy engine: fitted to the 968 with VarioCam variable valve timing (240 PS) for the final chapter of the transaxle era.

Section 07

Source Conflicts & Data Notes

Transparency · Cross-referencing · Declared discrepancies

Conflict 1 — 944 Celebration Edition: 500 vs 880–930 units

Sources in conflict: Carscoops, Telegraph, and most US auction listings cite "500 units." Factory production data (porsche944celebrationedition.weebly.com, from original Porsche documentation, M757 order): 880–930 worldwide, July–September 1987. Breakdown: 200 Germany (100 black + 100 silver), 500 US (250 black + 250 silver), 230 ROW (73 black + 157 silver), 30 UK. StuttCars primary states 930 total.
VERDICT: 880–930 worldwide. The "500" figure is the US allocation only. US sellers stating "1 of 500" are technically correct for their market but misleading globally.

Conflict 2 — 944 S2 total production: 14,071 vs 19,945

Sources in conflict: Porsche Mania: ~14,071 total. Frazerpart factory records: coupe 7,409 + cab 5,640 = 13,049. Rennlist VIN study citing Porsche factory data directly: 19,945 total (coupe + cabriolet). The Rennlist figure is the most-cited and comes from a direct factory data citation. Lower figures appear to have data gaps or exclude certain markets.
VERDICT: 19,945 used as primary (Porsche factory data). Flagged as disputed. The lower figures (~13,049–14,071) likely reflect incomplete market coverage.

Conflict 3 — 944 S production: 12,831 vs 12,936

Sources in conflict: Porsche Mania: 12,831 total, 8,703 US. Frazerpart (factory records): 12,936 total, 8,688 US. Difference: 105 units, 15 US units. Both cite factory-level data.
VERDICT: Difference is within normal batch-counting variance. No meaningful impact on rarity assessment. Range 12,831–12,936.

Conflict 4 — 944 Turbo S: "planned 1,000" vs actual 1,635

Sources in conflict: Peter Morgan (book) and Deancent: Porsche planned 1,000 Turbo S units in Silver Rose. Actual production (Rennlist VIN study, Porsche Mania): 1,635 confirmed + 12 factory prototypes in 1988 MY. ~775 Silver Rose specifically.
VERDICT: 1,635 is the confirmed production number. "1,000" was the original intent, not the outcome. Silver Rose was the signature but not the only colour.

Conflict 5 — 944 Turbo Cabriolet: 525 vs 625

Sources in conflict: Jerry Sloniger (Excellence magazine, October 1991): "factory built 525." All subsequent sources (Porsche Mania, StuttCars, Deancent, Wikipedia): 625 total.
VERDICT: The Sloniger figure was written before production ended — an interim count. 625 is the confirmed final figure. 100 RHD, 525 LHD.

Conflict 6 — 924S total production (no consensus figure)

Sources in conflict: StuttCars total 924 family = 152,082. Subtracting base (121,289) + Turbo (13,616) + homologation (~564) implies 924S ≈ 16,600–17,200. Holt Motorsports cites ~8,000 (clear undercount). Classic Cars Fandom confirms 980 Le Mans edition (1987).
VERDICT: No single authoritative breakdown exists for 924S by year. Implied aggregate total ~16,600–17,200. The 8,000 figure demonstrably too low given known sub-variant volumes. Flagged medium confidence.

Data hierarchy used for this dossier: (1) Porsche factory production records / VIN registry analyses; (2) StuttCars and Porsche Mania cross-referenced; (3) Rennlist VIN thread studies; (4) Academic / enthusiast publications; (5) Period press (used with caution — often written mid-production). Auction listing descriptions are treated as the least reliable source and frequently cite US-only figures as global totals.