D91 - 4-cyl. turbo diesel engine 2.0 l/103 kW (4V) TDI common rail; Base engine: TG3/ TJ3/TU3/TU4/TL4/TP4/TM3/TW3/TR4/TS1/TN5 [MOT - Engine specifications] KH6 - Electronically controlled air conditioning system [HKA - Heating and air conditioning system] TR4 - 4-cylinder diesel engine 2.0l Unit 03L.N [GMO - Base engine] 8Z4 - Moderate hot country [MKU - Engine cooling system] 8Z6 - Hot country [MKU - Engine cooling system] 9AB - Manually controlled air conditioning [HKA - Heating and air conditioning system] 9AK - Climatronic with impact pressure control free of cfc [HKA - Heating and air conditioning system] 9AP - Climatic air-conditioning system (semi-automatic) [HKA - Heating and air conditioning system]