Has there bin any problems with the emission box on the engine or the exhaust on the 2.1 2008?

Yes, the 2008 2.1 engine has been reported to experience problems with the emission box and exhaust system. Common issues include failures in the diesel particulate filter (DPF) and problems with the EGR (Exhaust Gas Recirculation) system, which can lead to increased emissions and engine performance issues. Regular maintenance and timely repairs are essential to mitigate these problems.