Golf IV TDI 110CV, it takes to start, both in Fri

Hello, I would like someone to help me, it turns out that I have a 110 hp 1.9 TDI golf IV, which takes me to start, both cold and hot, can someone help me?

Hello, it could be one or more heater in poor condition, or that the engine is too low compression (many km), it would be necessary to know if the fault light is turned on, if the engine is too smoke, if it has the expected power, etc. The best thing is that someone takes a look.
Greetings.

The first of all, thank you very much for answering, but they have told me that if they were the heater, hot it would have to start quickly, apart from this, I tell you that the car has 160000 km, which for what they have told me, it is not much for a diesel, and the engine compression, according to me a mechanic, this perfect one