Abarth 595 1.4 T-Jet 145

The turbo boost control solenoid is one of the most commonly reported faults on the 1.4 T-Jet. Carbon and oil mist build up on the solenoid plunger, particularly on cars driven gently or mainly on short trips, causing it to stick. When it fails, the ECU drops the engine into limp mode and limits boost to roughly 0.4 bar (6 psi), often accompanied by fault code P0299 (underboost). The solenoid itself is around €50-80, and an independent shop will usually replace it within 1-2 hours for a total of €150-300. Where the sticking solenoid has caused the wastegate actuator rod or arm to seize, the work extends to the turbo side and totals can climb to €400-600. A restart often clears the limp mode temporarily, which is a useful diagnostic clue but not a fix. Regular spirited driving and quality fuel help keep the solenoid clean.

The hydraulic clutch system shares fluid with the brake reservoir, and the seals are sensitive to moisture absorption in old fluid. If clutch fluid is not flushed every 2 years, seal failure within 5-7 years is widely reported. The slave cylinder sits exposed on top of the gearbox, which accelerates wear. Symptoms include a soft or spongy clutch pedal, gears becoming hard to engage, or the pedal staying on the floor. Master cylinder replacement is around €200-400; the slave cylinder typically adds €300-500 because of gearbox proximity. On neglected cars both fail in quick succession. Preventive fluid changes every 2 years cost €50-80 and are by far the cheapest fix.

The Fiat 500 platform uses cost-engineered suspension components that wear faster than competitors, and the stiffer Abarth setup makes them work harder. Front strut top mounts and rear shock bushings are the most common culprits, producing knocking or clunking noises over bumps and expansion joints. Strut mount replacement is around €80-120 per side including parts and labor. Rear shock bushes are €50-80 per side, and drop links are typically €40-60 each. On cars driven over poor road surfaces, expect to attend to these items every 40,000-60,000 km. The base 595 uses standard Fiat suspension rather than the Turismo's Koni rear dampers, so wear at the rear can be slightly more pronounced.

This is one of the most commonly reported Fiat 500 / Abarth 595 issues. The exterior door handle uses a steel pin inside a zinc alloy casting; the pin rusts, and each pull flexes the weakened casting until it cracks from metal fatigue. Forum reports of multiple replacements on the same car are common. DIY repair kits and improved aftermarket handles are widely available for around €15-30 in parts, with professional repair around €80-150. Periodic lubrication of the hinge pivot with white lithium grease delays the failure. Expect almost every long-term owner to encounter this at least once.

The wiring harness running through the rubber grommet between body and tailgate flexes every time the boot is opened. Over years the insulation cracks and individual conductors snap, causing intermittent or permanent failure of the rear wiper, rear wash, number plate lights or boot lock. Cold weather accelerates the problem because the insulation becomes brittle. On inspection it is common to find several wires partially split with one or two broken through. OEM replacement looms cost €80-150, while upgraded silicone-insulated aftermarket harnesses are €50-100 and a popular fix. Fitting is straightforward and takes 1-2 hours.

Abarth had a documented batch issue with faulty 3rd and 4th gear synchro rings, affecting a limited number of production runs. Affected cars exhibit notchy shifting or crunching when selecting these gears, particularly when the gearbox is cold. The fix requires gearbox removal and a strip-down. Dealer quotes for this work can reach €3,500, while independent gearbox specialists typically charge €1,500-2,000 using exchange units. This is a manufacturing batch problem rather than a design flaw on every car, so most 595s are unaffected. A thorough cold-and-hot test drive paying close attention to 3rd and 4th gear engagement is the best protection.

If the car is fitted with the 5-speed MTA (Manual Transmission Automatic) instead of the manual, the robotised gearbox brings its own headaches. The hydraulic actuator unit, accumulator, and clutch position sensor are the usual suspects. Symptoms include very harsh shifts, slow engagement, refusal to select a gear, or warning lights. Recalibration via a Fiat-capable diagnostic tool sometimes clears short-lived issues at low cost. Actuator and sensor replacements at independents typically run €400-1,200, while a full TCU/actuator rebuild can reach €1,500-2,500. The MTA is widely considered the weak point of the range; many buyers steer toward the manual to avoid this exposure entirely.

Not every base 595 has the Record Monza dual-mode exhaust, but where fitted the spring-loaded valve is widely reported to seize shut. Carbon and corrosion build up on the valve pivot, preventing it from opening. Pre-September 2018 cars use a passive valve operated by exhaust backpressure and are particularly prone; post-2018 cars have a solenoid-actuated valve which is somewhat more reliable. Owners report that periodic application of high-temperature anti-seize grease or penetrating oil to the pivot points helps prevent seizure. If the valve mechanism breaks completely, a replacement exhaust section costs €300-500. A common workaround is to wire the valve open permanently.