Hydraulic brake systems can suffer from brake fluid leaks, which reduce braking efficiency and can lead to brake failure.

Hydraulic brakes can overheat, especially during prolonged use, causing a temporary reduction in braking power known as brake fade.

Over time, brake pads wear down and need to be replaced to maintain effective braking performance.

The master cylinder can fail, leading to a loss of hydraulic pressure and brake functionality.

Anti-lock Braking System (ABS) issues can arise, causing the brakes to lock up during hard stops, which can be dangerous.

Air bubbles can enter the hydraulic brake lines, reducing the effectiveness of the braking system.

The in-line 4-cylinder engine may suffer from overheating issues, especially under heavy loads or in hot climates.

If equipped, the turbocharger on the FCA engine can develop issues such as bearing failure or oil leaks.

Fuel injectors in the FCA engine can become clogged, leading to poor engine performance and reduced fuel efficiency.

The engine's timing belt or chain may fail, causing significant engine damage if not addressed promptly.

The exhaust manifold on the in-line 4-cylinder engine can crack, leading to exhaust leaks and reduced performance.

In-line engines can sometimes suffer from imbalance and vibration issues, which can affect the overall driving experience.

The engine may develop coolant leaks, leading to overheating and potential engine damage.

Modern engines rely on various sensors (e.g., oxygen sensor, MAF sensor) that can fail and cause engine performance issues.

If the optional Dynamic Brake Support (DBS) is installed, it can malfunction and fail to provide the intended braking assistance.

V-shaped engines like the 1GR-FE can sometimes suffer from uneven cooling, leading to potential overheating issues, especially if the cooling system isn't maintained properly.

Port fuel injection systems can experience clogging or failure of injectors, leading to poor engine performance or misfiring.

The 1GR-FE engine uses a timing chain which, although generally more durable than a belt, can wear out or become noisy over time, requiring replacement.

As with many engines, over time, seals and gaskets can deteriorate, leading to potential oil leaks, particularly around the valve cover gaskets.

Modern engines like the 1GR-FE rely heavily on sensors for optimal operation. Issues with oxygen sensors, mass airflow sensors, or other engine management sensors can lead to poor performance or increased emissions.

The 1GR-FE engine has been known to occasionally suffer from exhaust manifold cracks, which can lead to exhaust leaks and increased engine noise.

Port injection systems can sometimes suffer from carbon build-up on the intake valves, which can affect engine performance over time. Regular maintenance and occasional use of fuel system cleaners can help mitigate this.