Rust on certain components in the engine compartment? 2.0D

Servus, I’m looking for a used S40, preferably as 2.0D. Today one came fresh into the online ads – stood with me around the corner, therefore despite the high mileage (230.00km) visited. Almost full equipment, Navi, leather, PDC front and rear and checkbook maintained at Volvo. Also on the test drive he drove surprisingly “young” – also not caught anything in the interior. If 130,000km were on the speedometer, I would believe it too. Absolutely everything went, except the washing – Nozzles for the xenons. However, when looking under the hood, I noticed quite strong rust on certain components on the engine. Actually, I have experience with used cars (and also some idea), but I prefer to ask. Now my question: Is this rust problematic?