2006 Mercedes-Benz CLS-Class problems
The 2006 Mercedes-Benz CLS-Class has 110 NHTSA owner complaints and no active recalls. Here's where owners say it breaks.
The 2006 Mercedes-Benz CLS-Class has 110 NHTSA owner complaints on file (U.S. federal records, as of August 2026). The most-reported system is brakes at 24 complaints, typically surfacing around 110,357 miles (~$450 to repair). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2006 CLS-Class (this page) | 110 | 0 |
| 2007 CLS-Class | 40 | 0 |
| 2008 CLS-Class | 22 | 0 |
| 2009 CLS-Class | 6 | 0 |
Solid reliability overall. Common issues are concentrated in a few systems.
Buyable on the data — keep up the usual maintenance and inspect normally.
- No systemic severe-failure pattern in the complaint record
- Reliability score 7.8/10 — above the segment average
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
Buying a used 2006 Mercedes-Benz CLS-Class? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or make the seller fix it before you sign.
What to inspect on this specific car
- brakes — 24 owner reports · tends to show around 110,357 mi · ~$450 to fix
- fuel system — 21 owner reports · tends to show around 67,853 mi · ~$1,200 to fix
- powertrain — 8 owner reports · tends to show around 55,118 mi · ~$2,500 to fix
- airbags — 5 owner reports · tends to show around 150,000 mi · ~$1,100 to fix
⚠ The one to take seriously: airbags is flagged severe on this model , showing up around 150,000 mi. Inspect it closely on a test drive.
Recalls to confirm are done
Run the VIN from the listing — no active recalls on this model right now, but confirm none were opened after this car was built.
Verdict for buyers: 7.8/10 model. The priciest documented failure is powertrain (~$2,500) — get the seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report tells you what this exact car has been through. Smart buyers get both.
See the full pre-purchase inspection checklist →Ask anything about your 2006 Mercedes-Benz CLS-Class
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in this vehicle's actual NHTSA record, not generic advice.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
Top trouble spots 7 categories with 3+ complaints
What owners are saying recent NHTSA-filed complaints · verbatim
Bought this car less than 30 days ago and it has very strong gas smell every time after refueling inside and outside the car...I have to leave my garage door open because of the strong gas fumes in the garage that also creep into the house!! *tr
I was driving and the reduce braking light came on. I pulled over stopped my vehicle because it stated that I needed to do so, restarted the vehicle and tried to make it home. I began to loose control of the steering and even though I was pushing the brake pedal to stop, the…
Tl* the contact owns a 2006 Mercedes-benz cls500. While driving 70 MPH, the "reduce brake" and "stop the vehicle" indicators illuminated. The vehicle was pulled over to the shoulder lane where it was able to restart and resume normal operation. The vehicle was taken to an…
After filling my car, I started smelling a gas odor coming from the driver side back seat area when I reach home about 2 miles away from the service station where I filled up. I figure the smell would have go away but everytime I drive my car I can be assured to smell that gas…
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Common questions
Is the 2006 Mercedes-Benz CLS-Class reliable?
Mostly yes. With a reliability score of 7.8 out of 10 based on 110 owner complaints filed with NHTSA, the 2006 Mercedes-Benz CLS-Class is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2006 Mercedes-Benz CLS-Class?
On the NHTSA data, the 2006 Mercedes-Benz CLS-Class does not need avoiding. Buyable on the data — keep up the usual maintenance and inspect normally. The record behind that call: No systemic severe-failure pattern in the complaint record; Reliability score 7.8/10 — above the segment average. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2006 Mercedes-Benz CLS-Class?
Inspect the brakes first — it's the most-reported issue on this model, with 24 owner complaints filed. Typical failure occurs around 110,357 miles. Average repair cost runs about $450 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2006 Mercedes-Benz CLS-Class a good used car to buy?
It scores 7.8 out of 10 on our NHTSA-based read of 110 owner complaints. The main thing to watch is brakes. Typical failure occurs around 110,357 miles. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2006 Mercedes-Benz CLS-Class?
Based on NHTSA records, the most-reported issue is brakes, with 24 complaints filed. Typical failure occurs around 110,357 miles. Average repair cost runs about $450 at an independent shop.
What's the most expensive thing that goes wrong?
The brakes is one of the costlier repair items. Average repair cost runs about $450 at an independent shop. Typical failure occurs around 110,357 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Mercedes-Benz CLS-Class has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2006 Mercedes-Benz CLS-Class?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 110 complaints on file and the costliest repair averaging $450, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.