Fiat 500 312
Weaknesses, engine ratings and buying advice
The Fiat 500 (type 312, from 2007) is a lifestyle city car with retro charm — bought with the eyes, kept with the head. Engine choice decides everything, as the range runs from a fundamentally sound naturally aspirated unit to a wear-prone two-cylinder turbo.
The pragmatic buy is the 169A4 (1.2 8V, 69 hp): a simple FIRE naturally aspirated engine, frugal and low-maintenance, whose only real weak points are ignition coils and the due timing belt (an interference engine!). For more eagerness there's the 169A3 (1.4 16V, 100 hp) — the same engine as in the Panda 100HP, rev-happy but wanting to be driven actively. The 2020 GSE-T3-MH (1.0 FireFly mild hybrid, 70 hp) is a frugal naturally aspirated city engine with 48-volt assistance. Be wary of the 312A2 (0.9 TwinAir, 85 hp): the characterful two-cylinder turbo sounds unique but has documented weaknesses in the timing chain, MultiAir unit and crankcase ventilation — repairs are expensive, so it's rated "avoid" in our assessment. The 199B1 (1.3 MultiJet, 95 hp diesel) is worth it only for high-mileage drivers; in short city use the EGR carbons up and the DPF blocks.
Three themes define the 500. First, on petrols: the ignition coils (juddering, misfires) — cheap but recurring. Second, on the TwinAir, timing-chain stretch and the oil-sensitive MultiAir unit. Third, in general: the timing belt (the 1.2/1.4 are interference engines — a snap means engine damage, proof of replacement is mandatory). Add minor electronics and body quirks.
Test drive: Start the petrol cold and listen for misfires. On the TwinAir watch for chain rattle on cold start and the oil level (MultiAir!). Demand timing-belt proof on the 1.2/1.4. On the diesel ask about the route profile (city = DPF pre-damaged).
Market 2026: Early 1.2s (2007–2010, high mileage) from around $4,400, well-kept examples $6,500–10,000, young hybrid models (from 2020) $12,000–16,000. The 1.4 16V and tidy cabrios (500C) at a small premium.
Insider pick: A 169A4 (1.2 8V) with documented timing-belt change and clean ignition, ideally post-facelift. The engine is undemanding, parts are cheap and everywhere — and you dodge both the TwinAir chain trap and the diesel DPF problems. If you put character over reason and know the risk, the TwinAir is the more entertaining but costlier companion.
135 PS
500 · Benzin
Where the Abarth idea begins
Fun to Drive!136–140 PS
1.4L T-Jet Turbo Benzin
11 weaknesses
Stay Away!Body Variants
The Fiat 500 312 is available as Hatchback and Convertible — choose your body type for specific insurance data:
Engine Overview
The Fiat 500 312 is available with 6 engine variants — from 60 to 140 hp.
Solid small diesel from GM/Fiat with a fundamentally long-lived reputation. However, frequent short trips lead to DPF blockage, fuel dilution of the oil and EGR clogging. With consistent maintenance and regular motorway driving, a manageable unit.
- !! High-pressure pump wear and knocking noises from 130,000 km
At higher mileages, knocking noises from the engine bay occur, indicating high-pressure pump wear. Misdiagnosis (confusion with injectors) is common.
Symptoms: Knocking/clattering in engine bay from approximately 2,000 rpm especially when engine is warm, power loss - !! Turbocharger wear with neglected maintenance from 150,000 km
With long oil change intervals or incorrect oil specification, the turbo bearings wear prematurely. Whistling noises and blue exhaust fumes are typical early warning signs.
Symptoms: Whistling or hissing noises from the turbo area, blue smoke, increased oil consumption - !! Timing chain stretch and failure from 150,000 km
The single-row roller chain elongates noticeably under wear. Documented failures between 90,000 and 211,000 km with total engine loss. Cold-start rattle is the key warning sign. Inspect tensioner and guides from 100,000 km.
Symptoms: Metallic rattle on cold start from the timing chain cover, especially the first seconds; at advanced stages also at operating temperature.
+ 6 more engine weaknesses + vehicle weaknesses
Technically interesting twin-cylinder turbo with high wear risk. MultiAir unit, timing chain and crankcase ventilation are documented system weaknesses. Repairs are expensive, and serious failures have occurred as early as 40,000–80,000 km. Only acceptable with a complete service history and correct oil specification.
- !! MultiAir unit faulty from 60,000 km
The electrohydraulic MultiAir unit fails regularly on the TwinAir, sometimes from as early as 40,000 km. Repair costs of €1,500–3,000 are typical. Incorrect engine oil (5W40 instead of 0W30) significantly accelerates wear.
Symptoms: Engine runs roughly, misfires on individual cylinders, engine warning light, start/stop system unavailable - !! Timing chain jumps / chain tensioner faulty from 60,000 km
The chain tensioner of the TwinAir fails with insufficient oil supply or at high mileage. Documented case: timing chain jumped a tooth at 38,000 km, repair costs €1,650. Rattling after cold start is a typical warning sign.
Symptoms: Metallic rattling after cold start, engine warning light, rough running, in extreme cases won't start - !! Ignition coil failure (recall) from 40,000 km
Faulty ignition coils were reported so frequently on the TwinAir that Fiat carried out a recall and warranty extension. Coil replacement under warranty is extensively documented.
Symptoms: Misfires, engine warning light, rough running, engine runs on one cylinder only
+ 5 more engine weaknesses + vehicle weaknesses
A frugal three-cylinder FireFly with 48V mild hybrid (belt starter generator), tuned for city use. Important: the engine uses a timing chain, not a belt — lubricated by oil dripping from the head and sensitive to incorrect oil and extended intervals (watch for cold-start rattle). The crankcase-ventilation diaphragm is a typical wear item; the belt starter generator fails rarely but expensively. Stick strictly to the specified oil.
- !! Timing chain tensioner wear from 100,000 km
All FireFly engines use a chain lubricated by oil dripping from the head, not an oil bath. The hydraulic tensioner gums up with the wrong oil (0W-20 required) or extended intervals. Cold-start rattle is the first sign.
Symptoms: Brief metallic rattle on cold start, camshaft timing fault code, warning light after repeated cold starts. - !! Hybrid System Not Working from 60,000 km
Mild-hybrid assist and the start-stop system of the GSE-T3 fail when the 48V auxiliary battery weakens. Common with short-trip use and in winter.
Symptoms: Start-stop deactivates itself, no hybrid boost, warning indicator on instrument cluster - !! 12V Starter Battery Discharges Prematurely from 25,000 km
The 12V starter battery of the 500 Hybrid loses capacity prematurely under frequent short-trip use. First signs as early as 15,000–25,000 km through sluggish starting.
Symptoms: Slow starting, warning message on display, start-stop system deactivated
+ 3 more engine weaknesses + vehicle weaknesses
A simple, fundamentally sound naturally aspirated engine with a long production history — low-maintenance and frugal in daily use. Weak points are the ignition coils (misfires), the water pump and, at high mileage, mild oil consumption past the piston rings. It is a non-interference design: a snapped timing belt won't bend valves but will leave the engine dead, so the interval still matters. Throttle body and thermostat occasionally need attention. With regular care, a trouble-free long-distance runner.
- !! Cylinder head gasket failed from 80,000 km
On older FIRE versions (Punto 188), cylinder head gasket failures occurred frequently between 50,000–130,000 km. Typical sign: white, sweet-smelling exhaust smoke due to coolant entering the combustion chamber.
Symptoms: White smoke from exhaust, sweet smell, increasing coolant consumption, engine overheats - !! Water pump leaking / faulty from 100,000 km
The water pump of the 1.2 FIRE is a known weak point and is routinely replaced together with the timing belt. Failures between 80,000 and 120,000 km are documented multiple times in forums.
Symptoms: Coolant loss, tendency to overheat, coolant level drops without visible cause - !! Ignition coil failure with misfires from 90,000 km
Faulty ignition coils cause misfires (codes P0351/P0352), manifesting as juddering and the engine warning light. Typical for the FIRE engine, especially when the ECU can no longer control one coil and two cylinders drop out.
Symptoms: Juddering and engine oscillation at operating temperature, engine warning light flashing, rough idle
+ 5 more engine weaknesses + vehicle weaknesses
A rev-happy 1.4-litre naturally aspirated FIRE-family engine with 16 valves that only delivers its power higher up the range — drive it actively and it rewards you; in everyday use it feels a little thirsty and wants revs. A fundamentally solid design with a timing belt (mind the change interval). Known weak points are the ignition coils, the lambda sensor and slight oil consumption at higher mileage. Durable and uncomplicated with proper maintenance.
- !! Timing belt — interference engine from 120,000 km
Interference engine: a timing-belt snap destroys pistons and valves, totalling the engine. The change interval of 120,000 km or 5 years must be observed strictly.
Symptoms: No direct pre-failure warning; risk indicators are ticking on cold start, visible cracks on inspection, overdue interval - !! Ignition coil failure from 60,000 km
The individual ignition coils on the 1.4 16V fail intermittently, typically under thermal load. Multiple coils often fail in quick succession as they age together.
Symptoms: Engine misfires or stutters under acceleration, check engine light, misfire fault code, power loss when hot - !! Camshaft position sensor failure from 80,000 km
The camshaft sensor on the 1.4 16V can fail prematurely, forcing the engine into limp mode. Intermittent faults are notoriously difficult to diagnose reliably.
Symptoms: Power drop to limp-mode level, engine barely revs past 2,500 rpm, intermittent check engine light, rough running around 2,000 rpm
The 1.4 T-Jet in Abarth tune is a characterful sports engine running at significantly higher thermal loads than the standard version — the character is right, and the weak points are well-documented and manageable. Exhaust manifold cracks appear from around 30,000–40,000 km, sometimes earlier with consistently hard use; the symptom is a whistling sound under load and reduced boost pressure build-up. The reinforced esseesse manifold (approx. €250) has proven the reliable long-term fix. The turbocharger is fundamentally robust but should not be switched off immediately after high-load driving — 1–2 minutes at idle allows oil circulation and cooling. Ignition coils are a wear item as with all T-Jet variants. Change oil no later than every 10,000 km; after spirited use, inspect for leaks around the manifold area.
- !! Timing belt: short replacement intervals must be observed from 120,000 km
The 1.4 T-Jet is belt-driven. According to the manufacturer every 120,000 km or 6 years (4 years in harsh conditions). Failure causes total engine damage. Small belt pulleys stress the belt more than usual due to severe bending.
Symptoms: No warning before failure — engine won't start, metallic impact noises - !! MTA gearbox: hollow pin comes loose, gear blocking from 30,000 km
On the MTA-C510 gearbox, a hollow pin can come loose from its bearing and rub against a guide bush. Depending on temperature and gear, this causes gear blocking up to complete gearbox failure with the vehicle stopping. Fiat carried out a service action.
Symptoms: Gearbox shifts to neutral when braking instead of first gear; subsequently no gear can be engaged; vehicle must be towed - !! Exhaust manifold crack from 35,000 km
The cast-iron manifold develops hairline cracks from ~35,000 km due to thermal cycling — even in stock tune. Air leakage corrupts the lambda signal and costs boost. The reinforced esseesse manifold is the permanent fix.
Symptoms: Whistling or hissing at 2,000–3,000 RPM, especially on cold starts; boost gauge no longer reaching maximum; faint exhaust smell in the engine bay.
+ 8 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Rust Susceptibility at Sills and Wheel Arches Sills and wheel arches on the Fiat 500 (312) rust faster than average, especially with regular winter use and road salt exposure. Paint corrosion at sill edges from as early as 5–7 years. Symptoms: Paint bubbles along sill edges, visible rust spots on inner wheel arch panel, cavity corrosion at sill ends from 80,000 km | Medium | |
| Exhaust System Corrodes Early The rear silencer on the Fiat 500 (312) rusts through within a few years, especially in short-trip use, as condensation water accumulates inside. Symptoms: Increasingly loud exhaust noise, visible rust perforations at the rear silencer, exhaust smell inside cabin from 60,000 km | Low |
Test Reports
TÜV Report 2024
500 fails MOT with above-average frequency. Suspension, lighting and brakes are common points of failure.
2023-11ADAC Breakdown Statistics 2024
The 500 stands out in breakdown statistics with above-average breakdown frequency. Typical weak points are electrics and the ignition system.
2024-04Top Reported Issues
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Known Problems and Issues +
A total of 60 weaknesses have been documented for the Fiat 500 312 (2007–2023) — 45 engine-related and 15 vehicle-related. 2 problem engines: 312A2 (0.9L TwinAir Turbo), 312A1-Abarth (1.4L T-Jet Turbo). Typical issues affect Rust, Suspension, Electronics, Gearbox.
500 (199B1, 2010–2018) — Be Careful: High-pressure pump wear and knocking noises, Turbocharger wear with neglected maintenance, Timing chain stretch and failure. Power: 77–84 PS.
500 (169A4, 2007–2023) — Be Careful: Cylinder head gasket failed, Water pump leaking / faulty, Ignition coil failure with misfires. Power: 69 PS.
500 (312A1-Abarth, 2008–2023) — Stay Away!: Timing belt: short replacement intervals must be observed, MTA gearbox: hollow pin comes loose, gear blocking, Exhaust manifold crack. Power: 136–140 PS.
500 (312A2, 2010–2022) — Stay Away!: MultiAir unit faulty, Timing chain jumps / chain tensioner faulty, Ignition coil failure (recall). Power: 80–86 PS.
500 (169A3, 2010–2013) — Be Careful: Timing belt — interference engine, Ignition coil failure, Camshaft position sensor failure. Power: 95–101 PS.
500 (GSE-T3-MH, 2020–2024) — Be Careful: Timing chain tensioner wear, Hybrid System Not Working, 12V Starter Battery Discharges Prematurely. Power: 65–71 PS.
What to watch out for with the Fiat 500? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Fiat 500 312 have? +
What should I look for when buying a used Fiat 500 312? +
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Which Fiat 500 312 engine is the most fun? +
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Last updated: February 2026 · All information without guarantee