Porsche 944 944
Weaknesses, engine ratings and buying advice
250 PS
Turbo S · Benzin
Turbo S — the über-944, rarer than a Carrera RS
Legendary!165 PS
2.7L Benzin
11 weaknesses
Stay Away!Body Variants
The Porsche 944 944 is available as Coupé and Convertible — choose your body type for specific insurance data:
Engine Overview
The Porsche 944 944 is available with 6 engine variants — from 160 to 250 hp.
The M44.01 is a 2.5-litre four-cylinder with single overhead camshaft (SOHC) and 8 valves — robust in its basic design, but with one Achilles heel: the timing belt. As an interference engine, a belt failure means instant valve damage. The parallel balance shaft belt can take the timing belt with it if it breaks — double the risk. Thermally solid as long as the water pump works (it too runs off the timing belt). Oil leaks at the front seals are age-typical and primarily relevant because oil on the belt drastically shortens its life. If the belt history can't be fully documented, walk away.
- !! Timing belt failure — interference engine from 80,000 km
All M44 engines are interference engines. If the timing belt breaks, the valves bend immediately — typically 8 exhaust valves. No official Porsche replacement interval; generally recommended every 30,000–60,000 km. Timing belt history is a key purchase factor.
Symptoms: Engine stops abruptly, cranks unusually fast on restart attempt (no compression resistance), metallic knocking from the head - !! Balance shaft belt — secondary risk from 70,000 km
If the balance shaft belt breaks, it can wrap around the timing belt and take it with it — causing valve damage. Always replace together with the timing belt. Oil-contaminated belts wear faster.
Symptoms: Slapping noise from the belt drive, oil traces on the balance shaft belt, engine dies suddenly - !! Water pump + thermostat — unusual design from 90,000 km
A seized water pump can cause timing belt failure — catastrophic in an interference engine. The thermostat is positioned after the radiator (not before, as is usual), which makes diagnosis more difficult. Coolant in the oil points to a head gasket failure or the side-mounted oil cooler/heat exchanger on the block.
Symptoms: Temperature gauge rising unusually, coolant loss without visible leak, milky oil on the dipstick, squealing noise from the belt drive
+ 8 more engine weaknesses + vehicle weaknesses
The M44.12 is the displacement-enlarged variant of the base M44 — 2,680 cc vs. 2,479, 165 hp vs. 163. Technically identical architecture (SOHC, 8V), same weaknesses. Only fitted in the final model year 1988/89 as a transitional model to the 968. Rare on the market, technically barely different from the 2.5.
- !! Timing belt failure — interference engine from 80,000 km
All M44 engines are interference engines. If the timing belt breaks, the valves bend immediately — typically 8 exhaust valves. No official Porsche replacement interval; generally recommended every 30,000–60,000 km. Timing belt history is a key purchase factor.
Symptoms: Engine stops abruptly, cranks unusually fast on restart attempt (no compression resistance), metallic knocking from the head - !! Balance shaft belt — secondary risk from 70,000 km
If the balance shaft belt breaks, it can wrap around the timing belt and take it with it — causing valve damage. Always replace together with the timing belt. Oil-contaminated belts wear faster.
Symptoms: Slapping noise from the belt drive, oil traces on the balance shaft belt, engine dies suddenly - !! Water pump + thermostat — unusual design from 90,000 km
A seized water pump can cause timing belt failure — catastrophic in an interference engine. The thermostat is positioned after the radiator (not before, as is usual), which makes diagnosis more difficult. Coolant in the oil points to a head gasket failure or the side-mounted oil cooler/heat exchanger on the block.
Symptoms: Temperature gauge rising unusually, coolant loss without visible leak, milky oil on the dipstick, squealing noise from the belt drive
+ 8 more engine weaknesses + vehicle weaknesses
The M44.40 is the DOHC 16V head on the 2.5-litre block — a fundamentally different engine from the 8V base. 190 hp, more rev-happy, more refined. The 16V head brings its own weaknesses: twice as many valve guides, twice as many camshaft seals, more complex timing belt drive. Remains an interference engine — the timing belt is equally critical. Thermally more demanding than the 8V due to higher specific output. Find the S in good condition and you have the dynamically best 2.5-litre 944.
- !! Timing belt failure — interference engine from 80,000 km
All M44 engines are interference engines. If the timing belt breaks, the valves bend immediately — typically 8 exhaust valves. No official Porsche replacement interval; generally recommended every 30,000–60,000 km. Timing belt history is a key purchase factor.
Symptoms: Engine stops abruptly, cranks unusually fast on restart attempt (no compression resistance), metallic knocking from the head - !! Balance shaft belt — secondary risk from 70,000 km
If the balance shaft belt breaks, it can wrap around the timing belt and take it with it — causing valve damage. Always replace together with the timing belt. Oil-contaminated belts wear faster.
Symptoms: Slapping noise from the belt drive, oil traces on the balance shaft belt, engine dies suddenly - !! Water pump + thermostat — unusual design from 90,000 km
A seized water pump can cause timing belt failure — catastrophic in an interference engine. The thermostat is positioned after the radiator (not before, as is usual), which makes diagnosis more difficult. Coolant in the oil points to a head gasket failure or the side-mounted oil cooler/heat exchanger on the block.
Symptoms: Temperature gauge rising unusually, coolant loss without visible leak, milky oil on the dipstick, squealing noise from the belt drive
+ 2 more engine weaknesses + vehicle weaknesses
The M44.41 is the peak of 944 development: 3.0-litre DOHC 16V, 211 hp, the strongest naturally aspirated engine of the range. Same DOHC head as the 944 S, but with larger displacement significantly more torquey in the midrange. Technical basis for the 968. Same timing belt interference concern as all M44s — at 211 hp and higher thermal loads even more critical. The S2 is the last 944 and the most refined — suspension, brakes and engine are the best combination of the range.
- !! Timing belt failure — interference engine from 80,000 km
All M44 engines are interference engines. If the timing belt breaks, the valves bend immediately — typically 8 exhaust valves. No official Porsche replacement interval; generally recommended every 30,000–60,000 km. Timing belt history is a key purchase factor.
Symptoms: Engine stops abruptly, cranks unusually fast on restart attempt (no compression resistance), metallic knocking from the head - !! Balance shaft belt — secondary risk from 70,000 km
If the balance shaft belt breaks, it can wrap around the timing belt and take it with it — causing valve damage. Always replace together with the timing belt. Oil-contaminated belts wear faster.
Symptoms: Slapping noise from the belt drive, oil traces on the balance shaft belt, engine dies suddenly - !! Water pump + thermostat — unusual design from 90,000 km
A seized water pump can cause timing belt failure — catastrophic in an interference engine. The thermostat is positioned after the radiator (not before, as is usual), which makes diagnosis more difficult. Coolant in the oil points to a head gasket failure or the side-mounted oil cooler/heat exchanger on the block.
Symptoms: Temperature gauge rising unusually, coolant loss without visible leak, milky oil on the dipstick, squealing noise from the belt drive
+ 2 more engine weaknesses + vehicle weaknesses
The M44.51 is the turbocharged 8V block — 220 hp from 2.5 litres, KKK K26 turbo. The engine shares all timing belt weaknesses of the naturally aspirated version, but adds turbo-specific cooling concerns: the turbo run-on pump must continue running after shutdown, otherwise the oil cooks in the turbo bearing. The wastegate valve wears and can lead to uncontrolled boost. Still: a well-maintained 951 is mechanically robust and long-lived. 220 hp at 1,250 kg makes it the fastest 944 in daily use — the turbo lag below 3,000 rpm is part of the character.
- !! Timing belt failure — interference engine from 80,000 km
All M44 engines are interference engines. If the timing belt breaks, the valves bend immediately — typically 8 exhaust valves. No official Porsche replacement interval; generally recommended every 30,000–60,000 km. Timing belt history is a key purchase factor.
Symptoms: Engine stops abruptly, cranks unusually fast on restart attempt (no compression resistance), metallic knocking from the head - !! Balance shaft belt — secondary risk from 70,000 km
If the balance shaft belt breaks, it can wrap around the timing belt and take it with it — causing valve damage. Always replace together with the timing belt. Oil-contaminated belts wear faster.
Symptoms: Slapping noise from the belt drive, oil traces on the balance shaft belt, engine dies suddenly - !! Water pump + thermostat — unusual design from 90,000 km
A seized water pump can cause timing belt failure — catastrophic in an interference engine. The thermostat is positioned after the radiator (not before, as is usual), which makes diagnosis more difficult. Coolant in the oil points to a head gasket failure or the side-mounted oil cooler/heat exchanger on the block.
Symptoms: Temperature gauge rising unusually, coolant loss without visible leak, milky oil on the dipstick, squealing noise from the belt drive
+ 4 more engine weaknesses + vehicle weaknesses
The M44.52 is the performance peak of the 944: 250 hp from 2.5 litres of turbocharged four-cylinder with a larger turbo, reinforced intercooler and optimised engine management. Technically the same weaknesses as the 220 hp turbo, but more susceptible due to higher thermal loads. Only around 1,635 examples built as the Turbo S — correspondingly rare and valuable. Matching numbers and complete service history are value-determining at these volumes.
- !! Timing belt failure — interference engine from 80,000 km
All M44 engines are interference engines. If the timing belt breaks, the valves bend immediately — typically 8 exhaust valves. No official Porsche replacement interval; generally recommended every 30,000–60,000 km. Timing belt history is a key purchase factor.
Symptoms: Engine stops abruptly, cranks unusually fast on restart attempt (no compression resistance), metallic knocking from the head - !! Balance shaft belt — secondary risk from 70,000 km
If the balance shaft belt breaks, it can wrap around the timing belt and take it with it — causing valve damage. Always replace together with the timing belt. Oil-contaminated belts wear faster.
Symptoms: Slapping noise from the belt drive, oil traces on the balance shaft belt, engine dies suddenly - !! Water pump + thermostat — unusual design from 90,000 km
A seized water pump can cause timing belt failure — catastrophic in an interference engine. The thermostat is positioned after the radiator (not before, as is usual), which makes diagnosis more difficult. Coolant in the oil points to a head gasket failure or the side-mounted oil cooler/heat exchanger on the block.
Symptoms: Temperature gauge rising unusually, coolant loss without visible leak, milky oil on the dipstick, squealing noise from the belt drive
+ 3 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Torque Tube Bearing — Labour-Intensive Transaxle Weakness The 944 transaxle layout connects engine and gearbox via a torque tube — the bearings inside wear after 30–40 years. Removal is extremely labour-intensive as either the engine or gearbox must come out. Specialist refurbishment is cheaper than new OEM parts. Symptoms: Vibration under load, droning or howling from the centre tunnel, noticeable play during throttle transitions from 200,000 km | High |
Top Reported Issues
Alternatives
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Known Problems and Issues +
A total of 51 weaknesses have been documented for the Porsche 944 944 (1982–1991) — 45 engine-related and 6 vehicle-related. 6 problem engines: M44.01 (2.5L), M44.12 (2.7L), M44.40 (2.5L 16V), M44.41 (3.0L 16V), M44.51 (2.5L Turbo), M44.52 (2.5L Turbo S). Typical issues affect Body, Rust, Interior, Electronics.
944 (M44.01, 1982–1988) — Stay Away!: Timing belt failure — interference engine, Balance shaft belt — secondary risk, Water pump + thermostat — unusual design. Power: 160–163 PS.
944 (M44.51, 1985–1991) — Stay Away!: Timing belt failure — interference engine, Balance shaft belt — secondary risk, Water pump + thermostat — unusual design. Power: 220 PS.
944 (M44.40, 1987–1989) — Stay Away!: Timing belt failure — interference engine, Balance shaft belt — secondary risk, Water pump + thermostat — unusual design. Power: 190 PS.
944 (M44.12, 1988–1989) — Stay Away!: Timing belt failure — interference engine, Balance shaft belt — secondary risk, Water pump + thermostat — unusual design. Power: 165 PS.
944 (M44.52, 1988–1991) — Stay Away!: Timing belt failure — interference engine, Balance shaft belt — secondary risk, Water pump + thermostat — unusual design. Power: 250 PS.
944 (M44.41, 1989–1991) — Stay Away!: Timing belt failure — interference engine, Balance shaft belt — secondary risk, Water pump + thermostat — unusual design. Power: 211 PS.
What to watch out for with the Porsche 944? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee