Used Mercedes-Benz ML320

What to know before buying: Mercedes-Benz ML320

From 1 forum thread and 2 press tests · updated 12/10/2026

What the reviews say

• The W164 offers a comfortable ride and good road manners, but the engineering of some components significantly detracts from the overall package.[2]one sourceW164
• An owner describes the 2010 ML 320 as a very good, comfortable car that behaves well on the road.[1]one sourceW164
• W164 bodies are generally not prone to corrosion; the paint, rust protection and chrome finishes are described as durable.[3]one sourceW164
• The cabin retains its appearance well, although the rear seats and luggage cover may develop squeaks over time.[3]one sourceW164

Typical faults

• A 2010 ML 320 owner replaced both front and rear air springs over ten years; an owner of a 2007 car also replaced a rear air spring.[1]one sourceW164

  2007–2010 · ML 320 CDI 224 hp

• A 2010 ML 320 required repair of an intercooler/manifold leak and replacement of throttle-valve seals.[1]one sourceW164

  2010–2010 · ML 320 CDI 224 hp

• A leaking right-rear lamp seal can let water damage the rear SAM; a 2010 owner replaced both rear-lamp seals and the rear SAM.[3][1]W164
• Water beneath the front passenger seat can damage the front SAM and disable electronics across the front of the cabin.[3]one sourceW164
• If the audio system stops responding to its buttons, the steering-column wiring ribbon may be at fault and require replacement.[3]one sourceW164

Which engine and version to take

• The evidence-backed choice is the 224 hp W164 ML 320 CDI: its owner praises its comfort and road manners while documenting substantial repairs.[1]one sourceW164

What to check at the inspection

• Check whether the vehicle sinks after parking and have the condition of its front and rear air springs diagnosed.[1]one sourceW164
• Inspect the right-rear lamp seal, luggage-area electronics and SAM for moisture or evidence of earlier repairs.[3][1]W164
• Check beneath the front passenger seat for moisture and test all electronics in the front of the cabin.[3]one sourceW164
• Test every audio and steering-wheel control; a lack of response may indicate a steering-column wiring-ribbon fault.[3]one sourceW164
• On an ML 320 CDI, inspect the intercooler, manifolds and throttle-valve area for leaks and evidence of earlier seal repairs.[1]one sourceW164

Verdict

Sources

1. [1]forums.mbclub.bg — Мерцедес МЛ 320 224 к.с. - хубав автомобил · forum
2. [2]santa.lv — Mercedes-Benz ML320 CDI (06–11) — ekspertu atsauksmes · press
3. [3]car-use.lv — nodaļa “Otras rokas” - Mercedes-Benz ML, W164 (2005... ... · press

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