2026-07-22 · 5 min read
Mercedes-Benz GLA — 时规链

Same timing chain design as A-Class and CLA — no belt. M270/M260/M264 all use chains with hydraulic tensioners. Cold-start rattle in the first 5 seconds is the warning sign. Correct oil and on-time oil changes are the primary prevention.
Repair Costs
- Tensioner only
- Full chain + guides + tensioner
