Buyer Research

2014 Mercedes-Benz ML350 — Should You Buy One?

Typical asking price: $13,000–$20,000. There are 2 high-severity known issues you need to know before handing over a check.

Kestrel Take

A solid, comfortable midsize luxury SUV with the durable M276 V6. Air suspension where fitted is the recurring cost, and the BlueTEC diesel version adds an emissions system that fails expensively. The gas V6 on steel springs is the version to want.

Known Issues for the 2014 Mercedes-Benz ML350

Ranked by wallet impact. These are documented, recurring problems — not freak accidents.

Airmatic suspension failureHigh — wallet impact

Air struts leak and the compressor fails under the weight of an SUV. Corner sag overnight is the symptom.

Repair cost range: $2,000-$4,500

BlueTEC diesel emissions system failuresHigh — wallet impact

On the ML350 BlueTEC, DEF injectors, NOx sensors, and the particulate filter all fail and produce countdown-to-no-start warnings.

Repair cost range: $1,500-$5,000

Balance shaft / timing components on older enginesMedium

The older M272 V6 had a balance shaft sprocket defect. The 2014 uses the M276, which avoids it — verify the engine code.

Repair cost range: $4,000-$7,000 if the wrong engine

Transfer case and 4MATIC actuator wearMedium

Chain stretch and actuator failures causing binding and warnings.

Repair cost range: $2,000-$4,000

Walk-Away Red Flags

✗Vehicle sitting low or slow to rise
✗DEF or emissions countdown messages on a BlueTEC
✗Multiple warning lights
✗No Mercedes specialist in the history

Good Signs

✓Steel spring suspension
✓M276 gas V6 rather than the diesel
✓Full dealer or specialist service history with receipts

Found a specific Mercedes-Benz ML350?

This page covers what goes wrong on the 2014 Mercedes-Benz ML350 in general. The Kestrel report covers this specific car— the asking price vs. market, the photos, the seller's description, and a BUY / NEGOTIATE / WALK AWAY verdict with a negotiation script.

Get My Verdict — $7.99

No account required. Delivered to your inbox, usually within minutes.

Known issues on this page are based on documented owner reports, NHTSA complaints, class-action records, and manufacturer technical service bulletins. Individual vehicles vary. A pre-purchase inspection by a trusted mechanic is always worth doing.