I moved YAKYAK to Estepona this time last year am now looking for a Volvo engineer to service engines and outdrives .Would welcome any recommendations.
I used the team at Duquesa just up the coast and was always happy with them. Sotogrande team are also very good but a lot more expensive. Avoid the Volvo team a Alcaidesa marina Volvo team as they are rubbish. I have never used the team at Estepona.
The Volvo reps here have poor reputation. I used the guys in Banus a few times, not great but there you go. A colleague used the Estepona guys and same story.
If engines are out of warranty you could try using Stella Nautica of Estepona, Graham Cox. Straightforward guy who does as he says. He represents MAN, CAT, Kohler, ZF, Williams and a few others.