Known APK problem

Mercedes-Benz C-Klasse S204: control arms / ball joints

On the Mercedes-Benz C-Klasse S204 the APK inspector finds control arms / ball joints problems 6.0× as often as on cars of the same age: at 11–12 years 7.6%, against about 1.3% nationally.

Illustration Mercedes-Benz C-Klasse S204

Window: Oct 2025 – Sep 2026 · Updated: 16 Oct 2026

What is it?

Worn bushes or ball joints in the suspension.

Repair indication: mediuma targeted repair at the garage.

How to check it at the viewing

Listen for clunks or knocks over speed bumps on the test drive. The car should not wander when braking.

Ask the seller: Have the control arms or ball joints been replaced?

By age

Share of inspected Mercedes-Benz C-Klasse S204s with this defect, compared with all cars of the same age.

Age	Type	C-Klasse S204	95%-CI	National	Difference	n
11 – 12 years	A	2.6%	1.9 – 3.6%	1.2%	2.1×	1,296
11 – 12 years	B	0.7%	0.4 – 1.3%	0.9%	0.8×	1,296
11 – 12 years	C	7.6%	6.2 – 9.1%	1.3%	6.0×	1,296
13 – 15 years	A	3.9%	3.3 – 4.6%	2.0%	2.0×	3,530
13 – 15 years	B	0.4%	0.2 – 0.7%	1.3%	0.3×	3,530
13 – 15 years	C	3.7%	3.2 – 4.4%	1.9%	2.0×	3,530
16+ years	A	6.9%	5.8 – 8.1%	2.8%	2.5×	1,859
16+ years	B	0.6%	0.3 – 1.1%	2.0%	0.3×	1,859
16+ years	C	5.8%	4.8 – 7.0%	4.1%	1.4×	1,859

A = structure, safety or costly mechanics; B = fail, usually simple; C = advisory. An age is missing when this defect is not among the most common there.

Comparable cars at 11–12 years

Model	Control arms / ball joints	Vs. national
Mercedes-Benz C-Klasse S204	7.6%	6.0×
Mazda Mazda3 (BL)	8.1%	6.3×
Hyundai i30 II	0.3%	0.3×
Opel Astra J Sports Tourer / GTC	0.3%	0.2×

Looking at a Mercedes-Benz C-Klasse S204? Check that car

Enter the plate and see the APK history, open recalls and how this car compares with other Mercedes-Benz C-Klasse S204s of the same age.

All weak spots of the Mercedes-Benz C-Klasse S204 · Control arms / ball joints: which models more often · Checklist for this model

Frequently asked questions

Does the Mercedes-Benz C-Klasse S204 often have control arms / ball joints problems?

Yes, more often than average at the APK. At 11–12 years the inspector found a control arms / ball joints defect on 7.6% of inspected Mercedes-Benz C-Klasse S204s, against about 1.3% of all cars of the same age (6.0×). Source: RDW Open Data, Oct 2025 – Sep 2026.

How do you check the control arms / ball joints on a used Mercedes-Benz C-Klasse S204?

Listen for clunks or knocks over speed bumps on the test drive. The car should not wander when braking.

Repair indication: small, medium or large. An indication of the usual repair, not a quote: the real cost depends on the car, the cause and the garage.

Source: RDW Open Data (CC0), analysis CarXray.nl. 6,857,004 inspected passenger cars aged 3 years and older, Oct 2025 – Sep 2026. Each car counts once. How we know