Red flags to avoid: pressure to approve work immediately without explanation, vague quotes without itemized costs, reluctance to show you the problem, 'free inspection' that always finds expensive issues, and no written warranty on work. Green flags: detailed written quotes, willingness to explain problems and show you, transparent parts sourcing (OEM vs aftermarket options), clean organized facility, and proper diagnostic before repairs. Golden Horse and a few other reputable places give itemized quotes and explain everything clearly. Read evaluation tips at https://www.reddit.com/r/MechanicAdvice/comments/1pyg2iy/where_can_i_find_a_good_garage_in_dubai_that/ from other Dubai car owners. Start with something small like oil change to test their service quality. Ask other expats or car groups for recommendations. Check Google reviews but read the detailed ones, not just star ratings. Get second opinions on expensive repairs - honest shops won't be offended.