Known APK problem

Mercedes-Benz E-Klasse W212/S212: structural rust

On the Mercedes-Benz E-Klasse W212/S212 the APK inspector finds structural rust problems 12.6× as often as on cars of the same age: at 11–12 years 1.9%, against about 0.2% nationally.

Illustration Mercedes-Benz E-Klasse W212/S212

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

What is it?

Rust through sills, floor or suspension mounts. Often expensive, and sometimes not worth repairing.

Repair indication: largea substantial repair; have a garage look first.

How to check it at the viewing

Look under the sills, in the wheel arches and at the suspension mounts, and press on suspicious spots. Watch for fresh sealant or new underbody coating.

Ask the seller: Has any welding been done on the floor or sills, and by whom?

By age

Share of inspected Mercedes-Benz E-Klasse W212/S212s with this defect, compared with all cars of the same age.

Age	Type	E-Klasse W212/S212	95%-CI	National	Difference	n
9 – 10 years	A	0.4%	0.2 – 0.7%	0.1%	6.2×	2,681
11 – 12 years	A	1.9%	1.4 – 2.5%	0.2%	12.6×	2,572
11 – 12 years	C	0.4%	0.2 – 0.8%	0.0%	22.3×	2,572
13 – 15 years	A	2.1%	1.7 – 2.5%	0.4%	5.9×	4,822
13 – 15 years	C	0.5%	0.4 – 0.8%	0.1%	5.8×	4,822
16+ years	A	1.1%	0.8 – 1.7%	1.1%	1.0×	1,917

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.

Looking at a Mercedes-Benz E-Klasse W212/S212? Check that car

Enter the plate and see the APK history, open recalls and how this car compares with other Mercedes-Benz E-Klasse W212/S212s of the same age.

All weak spots of the Mercedes-Benz E-Klasse W212/S212 · Structural rust: which models more often · Checklist for this model

Frequently asked questions

Does the Mercedes-Benz E-Klasse W212/S212 often have structural rust problems?

Yes, more often than average at the APK. At 11–12 years the inspector found a structural rust defect on 1.9% of inspected Mercedes-Benz E-Klasse W212/S212s, against about 0.2% of all cars of the same age (12.6×). Source: RDW Open Data, Oct 2025 – Sep 2026.

How do you check the structural rust on a used Mercedes-Benz E-Klasse W212/S212?

Look under the sills, in the wheel arches and at the suspension mounts, and press on suspicious spots. Watch for fresh sealant or new underbody coating.

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