2026-07-22 · 5 min read
Mercedes CLS Transmission Fluid Malaysia — 7G-Tronic / 9G-Tronic
C218 CLS uses 7G-Tronic (MB 236.7 ATF); C257 CLS uses 9G-Tronic (MB 236.15 ATF). Change at 40,000 km in Malaysia. Symptoms of degraded ATF: hesitation on upshift, hard engagement from Park, creep judder.
CLS Transmission Fluid — 7G vs 9G
- C218: 7G-Tronic uses MB 236.7 ATF — change every 40,000 km
- C257: 9G-Tronic uses MB 236.15 ATF — change every 40,000 km
- Symptoms of degraded ATF: hesitation on upshift, hard Park engagement, creep judder
Mercedes ATF — Malaysia Workshop Guide
9G-Tronic (W205/W206/GLC/GLE) requires MB 236.15 fluid — no substitutes. The older 7G-Tronic (W204) uses MB 236.11 or 236.12. Using generic ATF causes harsh shifting, hunting between gears, and premature clutch wear. The 9G-Tronic is not listed as a 'lifetime fill' by some dealers — change every 40,000–60,000 km. A W205 9G-Tronic ATF change (RM 500–700 at an independent workshop) resolves most jerky shift complaints. Budget RM 800–1,200 for the service at an authorised dealer.