Kia Sportage Mk3 4WD Coupling Judder
The rear differential coupling on AWD Sportage Mk3 develops a juddering sensation on tight turns — classic symptom of dry or degraded coupling fluid. A coupling fluid service (drain and refill with correct viscosity-limited-slip fluid) resolves most cases. Cost: £80-150. Neglect leads to coupling unit replacement at £400-800.
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