Abarth 595 1.4 T-Jet Mk1

The turbo boost control solenoid can stick due to carbon buildup, particularly on cars driven gently or mostly on short trips. When it fails, the ECU triggers limp mode and limits boost to approximately 0.4 bar (6 psi), often accompanied by fault code P0299. The solenoid itself costs around 50-80 euros, with labor of 1-2 hours for replacement (150-300 euros total). In some cases, the sticking solenoid causes the wastegate actuator to seize, pushing costs to 400-600 euros if turbo-side work is needed. Regular spirited driving and quality fuel help prevent carbon buildup. A restart often temporarily clears the limp mode, but the issue will return.

The hydraulic clutch system uses a master cylinder and slave cylinder with seals that are sensitive to moisture absorption in old brake fluid. Without fluid changes every 2 years, seal failure is common within 5-7 years. The slave cylinder sits atop the gearbox exposed to road grit, accelerating seal wear. Symptoms include a soft or spongy clutch pedal, difficulty engaging gears, or the pedal staying on the floor. Master cylinder replacement costs 200-400 euros, slave cylinder adds 300-500 euros due to gearbox proximity. On neglected cars both may fail in quick succession. The system is described by owners as poorly designed, particularly on right-hand drive cars where the routing is more convoluted. Preventive fluid changes every 2 years cost only 50-80 euros.

Abarth had a documented batch issue with faulty 3rd and 4th gear synchro rings. Affected cars exhibit notchy shifting or crunching when selecting these gears, particularly when the gearbox is cold. The gearbox must be removed and stripped to replace the synchro rings. Dealer quotes for this work can reach 3,500 euros, while independent gearbox specialists typically charge 1,500-2,000 euros using exchange units. This was a manufacturing batch problem rather than a design flaw, so most 595s are unaffected. Test drive both cold and hot, paying close attention to 3rd and 4th gear engagement.

The Fiat 500 platform uses relatively cheap suspension components that wear faster than competitors. Front strut top mounts and rear shock absorber bushings are the most common culprits, producing knocking or clunking noises over bumps. Strut mount replacement costs around 80-120 euros per side including parts and labor. Rear shock bushes are 50-80 euros per side. Drop links are another frequent replacement at 40-60 euros each. On cars driven over poor road surfaces, expect these items every 40,000-60,000 km. The base 595 uses standard Fiat suspension (unlike the Turismo which gets Koni rear dampers), so wear may be slightly more pronounced.

The wiring harness running through the tailgate rubber grommet is poorly engineered and flexes with each opening and closing of the hatch. Over time the insulation cracks and wires snap, causing the rear wiper, number plate lights, rear wash, or boot lock to fail intermittently. Cold weather accelerates the problem as the insulation becomes brittle. Forum reports indicate that upon inspection, every wire can have split insulation with some broken through entirely. OEM replacement harnesses cost 80-150 euros, and upgraded silicone-insulated aftermarket harnesses are available for around 50-100 euros. Fitting is straightforward and takes 1-2 hours.

This is one of the most common Fiat 500/Abarth 595 issues. The exterior door handle uses a steel pin inside a zinc alloy casting. The pin rusts, and each door opening flexes the weakened casting until it cracks from metal fatigue. One owner reported replacing the door handle four times. DIY repair kits cost approximately 15-30 euros and are widely available. Professional repair costs 80-150 euros. Prevention involves periodic lubrication with white lithium grease on the hinge pivot points. Almost every long-term owner will encounter this at least once.

Not all base 595 models have the Record Monza exhaust, but if fitted (as an option or retrofit), the spring-loaded exhaust valve is notorious for seizing shut. Carbon and corrosion build up on the valve pivot points, preventing it from opening. Pre-September 2018 cars use a passive valve operated by exhaust backpressure, which is particularly prone to sticking. Post-2018 cars have an active solenoid-operated valve that is somewhat more reliable. Owners report that regular application of high-temperature anti-seize grease or WD-40 on the pivot points is essential to prevent seizure. If the valve mechanism breaks completely, a replacement exhaust section costs 300-500 euros. Many owners simply wire the valve open permanently.