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Used 2004 Mercedes-Benz SL-Class Consumer Reviews

4.8 out of 5 stars
129 reviews
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3.38 out of 5 stars

2004 Mercedes-Benz SL500 - UNRELIABLE

MMATLOCK, 12/19/2004
2004 Mercedes-Benz SL-Class SL500 2dr Convertible (5.0L 8cyl 7A)
66 of 68 people found this review helpful

Well, here we go. I bought my SL500 in March of '04 and immediately the top failed. It was recalled for brakes in June. Its transmission failed and had to be replaced in October. Rains came in November and the trunk/top leaked. The dealer assured me that this was an "isolated" incident. Unfortunately it happened to me. They had to replace the trunk hinges. I have never owned a car that had trunk hinges fail, have you? Also, its brakes are really wierd, no feel. I thought I was buying Germany's best, but alas I bought a Plymouth with a three pointed star on the hood. What a shame. That star use to mean something.

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4.25 out of 5 stars

Premium Price -Poor Quality?

Beautiful, Quality, 02/14/2009
2004 Mercedes-Benz SL-Class SL500 2dr Convertible (5.0L 8cyl 7A)
46 of 48 people found this review helpful

Beautiful car that gets a lot of looks. Fit and finish are right on par with what you would expect from a Mercedes. We have had many problems with the quality of this car: Broken interior panels, faulty anti-lock relay, faulty anti-lock brake pump, broken baffles inside gas tank (had to replace gas tank!). Now the ignition system has just failed. 53,250 miles, and many rented loaners. We are glad to have bought the extended warranty.

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4.38 out of 5 stars

LOVE/HATE RELATIONSHIP

llenroc74, 05/26/2004
2004 Mercedes-Benz SL-Class SL500 2dr Convertible (5.0L 8cyl 7A)
16 of 16 people found this review helpful

I LOVE THIS CAR. I HATE THIS CAR. EVERYTHING IS GREAT EXCEPT BUILD QUALITY AND RELIABILITY. DEALER REPLACED TRANSMISSION AT 1,300 MILES. BRAKES (Sensotronic) STILL DON'T WORK CORRECTLY. DEALER SERVICE IS APPALING. M/B CUSTOMER SERVICE (Montvale, NJ) IS RUDE AND UNHELPFUL. TRYING TO INVOKE MY RIGHTS UNDER NYS LEMON LAW SEEMS FUTILE. MY 4th M/B SL AND MY LAST.

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1 out of 5 stars

TOTAL NIGHTMARE!!!

Matthew Garlough, 03/31/2016
updated 04/02/2018
2004 Mercedes-Benz SL-Class SL600 2dr Convertible (5.5L 12cyl Turbo 5A)
84 of 91 people found this review helpful

I purchased a pre-owned SL600 in spring 2013, and problems occurred almost immediately after leaving the lot. Dash displayed a TPMS issue, so I brought it back to find out that sensors for this were never installed but I could add them for $200 per tire. Less than 3 mo/3,000 miles later a hydraulic suspension hose burst lowering the car to the ground, and replacement for this was nearly $3,000. Even after repair the mechanics were not able to clear the suspension error in the system. Jump ahead another couple of months and I am roadside again, with a tire blowout due to an improperly mended cracked wheel. The Dealer was kind enough to cover replacement of this however. The water pump also failed shortly thereafter. Over the next couple of years of ownership, I racked up quite a service history. Brake assist system failure and replacement, more suspension parts, interior and exterior door handles, folding roof mechanism, wheel bearings, battery, differential replacement, several other issues, and regular but expensive maintenance. Repairs and service exceeded 70% of the original purchase price (which was not cheap) and the warranty barely covered half of this. With a total of 35 days in the shop and 5 roadside breakdowns over 3 years I did get pretty familiar with the new models and the loaner program, which was nice. But for the price I had to pay to keep this car drivable I could have hired a car service. Operating cost was over $2.50/mile for less than 17,000 miles, not including gas, tires and other consumables. The car was a humiliating laughing stock at the office, and I actually feared driving it not only for my own safety but anticipating the next catastrophic repair. When I returned the car it was explained to me that it still needed at least $5,000 of work, but I had enough. The way I see it, either the dealer was aware of the many issues with this car and didn’t disclose them, or did not thoroughly inspect and sort them out before purchase (maybe both). Neither explanation is acceptable. I will never again purchase a Mercedes-Benz product.

Safety
2 out of 5 stars
Technology
2 out of 5 stars
Performance
5 out of 5 stars
Interior
3 out of 5 stars
Comfort
4 out of 5 stars
Reliability
1 out of 5 stars
Value
1 out of 5 stars
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2.75 out of 5 stars

Poser

Corey Smith, 05/05/2008
2004 Mercedes-Benz SL-Class SL55 AMG 2dr Convertible (5.4L 8cyl S/C 5A)
49 of 54 people found this review helpful

Least reliable vehicle I have ever experienced. Needs frequent, unscheduled visits to repair shop. A car's first priority should be quality and reliability. This car fails in that regard. 500 hp is irrelevant if the car is sitting once again in the dealer's repair shop.

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4 out of 5 stars

SL 600

Ran Johnso, 07/23/2017
2004 Mercedes-Benz SL-Class SL600 2dr Convertible (5.5L 12cyl Turbo 5A)
9 of 9 people found this review helpful

expensive to repair electronics

Performance
5 out of 5 stars
Comfort
4 out of 5 stars
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3.13 out of 5 stars

If you want a headache buy an SL500

meredith, 12/10/2003
2004 Mercedes-Benz SL-Class SL500 2dr Convertible (5.0L 8cyl 7A)
19 of 22 people found this review helpful

I waited and waited for my Red 2003 Sl500 to come in. The car had problems for the beginning....from break problems, knocking noises, radio going off, roof noise bulbs going out...should i go on? The last time it was in for service...the dealership got into an accident with it. I have not seen the car for 2 months b/c they are still working on it. They just want to fix it and give it back!! I wish I sent my $104,000 on something else. Do yourself a favor buy a Corvette and pocket the money you save...best bang for the buck and headache free! If you do decide to buy one GOOD LUCK!

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4 out of 5 stars

This would be the best car if it was more reliable

sir_turtle, 08/03/2011
2004 Mercedes-Benz SL-Class SL500 2dr Convertible (5.0L 8cyl 7A)
88 of 108 people found this review helpful

I bought this 4 years old from mercedes dealer in reno. The car looks turn heads EVERYWHERE, Such a pleasure to drive, the 7 speed tranny shifts so smooth that its hard to tell how fast u are going because the power band is so smooth. The suspension creates such a smooth ride that you will notice how different it is then other cars. This has been my absolute fav car to drive, but what a nightmare to own. Battery in the trunk went and cost 300$ for new. you have to go to the dealer for everything because they need to reset the computer or else the car will constantly shut off as a gimmick to get you to the dealer. also suspension valve went and cost $3000 to fix, very common problem

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4.75 out of 5 stars

It should Fly

rick, 11/26/2007
2004 Mercedes-Benz SL-Class SL55 AMG 2dr Convertible (5.4L 8cyl S/C 5A)
14 of 16 people found this review helpful

I have owned Ferrari, other AMG Mercedes, several SL500's, Corvette's, and I would divorce my wife before giving up this car for any reason. I can't wait to go to work in the morning to drive down the winding grade I live on top of, and going up is just as exhilarating. This is the best car I have ever owned. I also own the S550 and never drive it....why would I?

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4.88 out of 5 stars

Best Car I've Ever Owned

Mike Caron, 07/21/2006
2004 Mercedes-Benz SL-Class SL500 2dr Convertible (5.0L 8cyl 7A)
10 of 11 people found this review helpful

I have thoroughly enjoyed this car. Have owned 3 BMWs and Alfa Romeo Spider, the last year in the US and on and on and there is nothing like the head turning luxury and performance that you find in this automobile. I am amazed every time some kid pulls up next to me on the highway in some souped up car at how much guts this car has on the open road. Sounds good, and I've literally gotten standing ovations when the top goes down in all its glory!

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