Alfa Romeo 2.0 TS
The most common Alfa engine of the late 1990s — 2.0-litre Twin Spark with 150–155 hp. Two spark plugs per cylinder, variable valve timing, revs to 7,000 rpm with a sound noticeably more characterful than anything from VW or Opel of the era. The Selespeed variant (automated manual gearbox) has a bad reputation for hydraulic issues and jerky shifting — the manual is strongly preferable. Phaser failure is the best-known weak point: diesel-like knocking at idle, repair around €300–500. Timing belt every 60,000 km mandatory.
Hot-Hatch Feeling, Italian Style
The 2.0 Twin Spark with 150 hp turns the 147 into genuine driving pleasure. From 3,000 rpm the engine wakes up, the precise steering does the rest.
Engine Weaknesses 8
Alfa shortened the timing belt interval several times to 60,000 km or 5 years. Belt failure causes engine damage without warning.
Symptoms: Engine suddenly impossible to start, loud metallic noise on belt failure
The O-rings of the oil galleries between head and block (perbunan) swell and deform when exposed to engine oil. Cylinder 4 is particularly affected: coolant enters the oil, visible as milky emulsion on the oil filler cap.
Symptoms: Milky residue on oil filler cap or dipstick, coolant consumption without external leak, white smoke from exhaust on a warm engine.
Insufficient oil supply (missed oil changes, oil loss) leads to con-rod bearing failure. The crankshaft then needs to be reground/polished. Repair costs €700–1,000 for machining plus bearings; severe damage requires engine replacement.
Symptoms: Loud knocking or hammering from engine (especially under load), oil pressure warning light, noticeable power loss.
The camshaft phaser wears out and can stick. Leads to rough running and poor throttle response.
Symptoms: Rough idle, power loss in lower rev range
Thermostat fails to open reliably, coolant loss through a leaking water pump. The pump's plastic impeller can break and interrupt coolant circulation. Recommendation: always replace water pump during timing belt change.
Symptoms: Temperature gauge fluctuates or rises above 110 °C, coolant level drops without visible external leak, cooling fan runs unusually often.
From approx. 150,000 km the seals harden and allow oil to burn into the combustion chambers. Consumption of 0.5–1 l/1,000 km and blue smoke on cold start are typical.
Symptoms: Blue smoke on cold start, increased oil consumption
The throttle body potentiometer's contact tracks wear out and supply incorrect signals to the engine ECU. Result: unstable idle, poor throttle response. Cleaning helps; relearning via OBD is required.
Symptoms: Rough or fluctuating idle between 500–2,000 rpm, engine hunts after cold start, vehicle jerks on throttle lift-off.
Lambda sensors have a lifespan of approx. 100,000 km. A worn sensor delivers incorrect mixture control, the engine runs rich, and fuel consumption rises sharply. Often misdiagnosed as an ignition problem.
Symptoms: Significantly increased fuel consumption (15–20 l/100 km), rough idle, engine management light, fault code P0170/P0172 (mixture too rich).
Vehicle Weaknesses 11
The V6 3.2 ECU is heat-sensitive and can fail at high ambient temperatures. Engine cuts out suddenly and only restarts after 15–20 minutes of cooling. No fault code stored.
The stock differential in the GTA gearbox can break under load — a bevel gear detaches and punches through the bell housing. Often without warning. A Q2 limited-slip differential is the recommended upgrade.
Early 147 GTA models have 305 mm Brembo discs instead of 330 mm. Alfa upgraded them to 330 mm under warranty. Unupgraded vehicles are prone to brake fade during spirited driving.
Sill lower edges and wheel arches rust from stone chips and moisture ingress. Areas around the jacking points are particularly at risk, where the plastic trim traps moisture.
Joints, bushes and anti-roll bar drop links on the front axle wear above average. Renewal typically required every 100,000–150,000 km. Plan for a suspension refresh at higher mileage.
The 305 mm braking system on the GTA is undersized for the 250 hp and wears heavily. Brake discs and pads must be renewed significantly more often than on regular 147 variants.
Window regulators and central locking fail from moisture ingress and aging control units. Door handles break. Airbag connectors on the side airbags can come loose.
On the Alfa 147 the air conditioning seals age and cause permanent refrigerant loss. Engine oil leaks from the timing belt can spray onto the compressor and cause additional damage. Compressor replacement: 400–900 €.
The 147 heater stays cold or delivers only lukewarm air, especially at idle. A blocked heat exchanger or air pockets in the system are the usual cause. Blend flap motor faults (often failed bulbs in the climate control unit) are also possible.
The Alfa 147's duplex power steering lines are prone to leaks, causing knocking and heavy steering. A leaking right-hand power steering pressure hose is known. Part cost approximately 100 €, fitment 1.5 labour hours. Steering play is not adjustable.
The 147 interior produces cold-weather creaking from trim panels and seat springs. On cold winter start-ups, seats and door trims squeak and crack. A typical quality issue on vehicles over 8 years old.