Depends on approvals. Euro L or Mobil1 ESP 5W30 (it would be my choice) are higher HTHS oil with minimum HTHS of 3.5cP (compared to around 3 in EP). They are borderline 5W40 oils.
European approvals are MUCH more stringent than API, wear wise, deposit, evaporation loss etc.
For example Pennzoil Euro L has HTHS around 3.6. Mobil1 0W40 has HTHS 3.6. You are basically buying 30 grade with HTHS (which is WHAT matters for protection ) of 40 grade oil.
I would still go Mobil1 ESP 5W30 bcs. you need API SP for warranty and that oil is IMO better than Euro L. Both have Mercedes MB229.51 approval (ESP has MB229.52 too) and generally MB approvals are comprehensively most stringent in industry.