Oil Brand /Type?

Here is what the factory recommends, I would stick to the Mobil1 I have had good luck with it.

Recommendation
ILSAC GF-4 (API SM) or above / 5W-20

Please let us know if you need anything else.

They are both good oils so you can't go wrong. You should be okay with the 5w30. Here is how to change the oil and filter in case you need it. Check out the images (below). Please let us know what happens.

The ACEA (Association des Constructeurs Européens d'Automobiles) specifications for engine oils are designed to ensure that oils meet specific performance requirements for different types of engines and driving conditions. The ACEA specifications include various categories, such as A, B, C, and E, each with different performance criteria.

In your case, you've mentioned the following:

Motul 8100 Eco Clean - ACEA C1
Motul 8100 X-Clean - ACEA C3
Your manual calls for ACEA A5
Let's break this down:

ACEA C1: This specification is designed for low-ash oils, typically used in diesel engines with aftertreatment systems like diesel particulate filters (DPFs). These oils are low in sulfated ash, phosphorus, and sulfur (SAPS) to prevent clogging of DPFs. They are not typically used in gasoline engines.

ACEA C3: ACEA C3 oils are also low-SAPS oils, but they are designed for use in both gasoline and diesel engines, including those with DPFs. They have better high-temperature stability and are suitable for modern, high-performance engines.

ACEA A5: ACEA A5 oils are intended for high-performance gasoline engines. They have specific requirements for wear protection and engine cleanliness.

Now, if your manual specifically calls for ACEA A5, it means the manufacturer of your vehicle recommends an oil that meets those specific performance criteria. While ACEA C3 oils may be suitable for some modern gasoline engines, they may not meet all the performance requirements of ACEA A5, particularly in terms of wear protection.

They should be safe to use, they are just telling you what the oil side effects are.