Free Buyer’s Guide

2022 Mercedes-AMG GLC 43 4MATIC

A simple guide for buyers with no car knowledge. Do most of the work from home, on the phone. Only go and see the SUV if you like what you hear. The decision is always yours.

The free guide is below. The full guide is made for this car after you pay.

Which 2022 GLC 43 4MATIC is it?

Carsales lists both the Coupe and the SUV for 2022. The build month matters for the safety rating below. No page we found names a mid-year change.

Ask the seller: "Is this the SUV or the Coupe, and what month was it built?"

Safety rating

• GLC built 2015 to Jan 2022 (tested car: GLC 220d wagon, left-hand drive)5 stars (Adult occupant 95% (36.4 out of 38))

As published by ANCAP. Older ratings, tested to easier standards than today’s.

The big-money items

You can’t see inside these parts, but you can ask about them.

• Timing chain and tensioners M276 3.0L TWIN-TURBO ENGINE FAMILY (LIKELY ENGINE IN THIS MODEL, CONFIRM THE CODE)

  $$$ (over $2,000)

  A chain turns parts inside the engine. Tensioners keep that chain tight.

  Ask: "Did it ever rattle on a cold start, and are there oil-change invoices?"

• Turbochargers M276 3.0L TWIN-TURBO ENGINE FAMILY (LIKELY ENGINE IN THIS MODEL, CONFIRM THE CODE)

  $$$ (over $2,000)

  A turbo is a small fan that pushes extra air into the engine. Hoses and valves help control it.

  Ask: "Has it ever lost power, made smoke or shown a warning light?"

• Automatic gearbox control unit 9G-TRONIC 9-SPEED AUTOMATIC FAMILY, ALSO FITTED TO THE C-CLASS, C63, E53 AND GLC 300E

  $$$ (over $2,000)

  The gearbox's control brain and oil valves. It decides when the gearbox changes gear.

  Ask: "Has the gearbox fluid been serviced, and when?"

• High-pressure fuel pump M276 3.0L TWIN-TURBO ENGINE FAMILY (LIKELY ENGINE IN THIS MODEL, CONFIRM THE CODE)

  $$ ($500 to $2,000)

  A pump that pushes fuel into the engine at high pressure.

  Ask: "Has it ever stuttered, idled roughly or lost power?"

• Oil leaks and camshaft adjusters M276 3.0L TWIN-TURBO ENGINE FAMILY (LIKELY ENGINE IN THIS MODEL, CONFIRM THE CODE)

  $$ ($500 to $2,000)

  Oil can seep from the front engine covers. Camshaft adjusters help set when the engine valves open.

  Ask: "Are there any oil leaks, or a rattle when it first starts?"

Regular maintenance

Look for these on the service invoices.

• Engine oil

  Keeps the engine moving smoothly. Late changes are linked to chain and turbo wear on this engine family.

  As shown in the logbook

• Spark plugs

  Light the fuel in each cylinder. One workshop page gives 30,000 to 40,000 miles as a guide only.

  As shown in the logbook

• Brake fluid

  The oil that carries your foot's push to the brakes.

  Every 2 years (our guide)

• Coolant

  Keeps the engine from getting too hot.

  As shown in the logbook

• Gearbox, diff and transfer oils

  Oil in the gearbox and the four-wheel drive parts. Skipped gearbox fluid service is linked to 9G-TRONIC faults.

  As shown in the logbook

• Air filter

  Cleans the air going into the engine.

  As shown in the logbook

• Tyres

  The only part of the car that touches the road.

  Replace at 6 years old, even with good tread (our guide). Alignment every 10,000 to 15,000 km (our guide)

• Battery

  Starts the car and runs the electrics.

  Most last about 3 to 5 years

Questions to ask on this GLC 43 4MATIC

These are for this model. The full list of questions, with tick boxes, is in the PDF.

• Does the engine rattle for the first few seconds on a cold start?

  Good answer: No rattle. It starts smoothly, even first thing in the morning.

  Why: A cold-start rattle is a listed sign of timing chain or camshaft adjuster wear.

• Has the gearbox fluid been changed, and is there an invoice?

  Good answer: Yes, with dates and kilometres in the logbook or on an invoice.

  Why: Many 9G-TRONIC gearbox problems are linked to skipped fluid services.

• Has it ever gone into limp mode or refused a gear? Limp mode is when the car limits its own power to protect itself.

  Good answer: No. It drives and shifts normally, and reverse works every time.

  Why: Dropouts, limp mode and a missing reverse gear are signs listed for this gearbox family.

Words you might see on an invoice

Mechatronic or valve body

The gearbox's control brain and oil valves. It controls oil pressure to each part that changes gear.

Timing chain tensioner

The part that keeps the engine's timing chain tight. A worn one can leave the chain slack.

HPFP

The high-pressure fuel pump.

Camshaft adjuster

Part of the variable valve timing. It changes when the engine valves open.

Carbon clean or walnut blasting

Cleaning carbon build-up off the engine's intake valves.

Wastegate or boost hose

Turbo control and the pipework that carries the extra air.

Two quick checks at home

All you need is the VIN.

• Recalls: vehiclerecalls.gov.au
• Money owing: ppsr.gov.au (small fee; check again on the day you pay)

• A $2 online PPSR search shows if money may be owing. It may also show if the car is recorded as stolen or written off.
• It does not show the amount owing, the ownership history, the odometer reading or outstanding fines.

General information only, not an inspection of any vehicle. “Our guide” means our recommendation, not a legal rule. Costs are a rough guide. Information current at October 2026: always check the VIN yourself.