Mercedes-Benz 420SEL service by top-rated mechanics at the convenience of your home or office

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How much does Mercedes-Benz 420SEL repair and maintenance cost?

The cost depends on your car, the type of service, and where you live. Here are estimates for a selection of Mercedes-Benz 420SEL services.

Service Estimate Dealer Estimate Your Savings Location
Service type Car Thermostat Replacement for 1991 Mercedes-Benz 420SEL V8-4.2L Estimate $165 Dealer Estimate $274 Savings 39.53% Location Denver, CO
Service type Ignition Coil Replacement for 1988 Mercedes-Benz 420SEL V8-4.2L Estimate $213 Dealer Estimate $386 Savings 44.69% Location Denver, CO
Service type Car Radiator Replacement for 1989 Mercedes-Benz 420SEL V8-4.2L Estimate $765 Dealer Estimate $1474 Savings 48.05% Location Denver, CO
Service type Car Battery Replacement for 1991 Mercedes-Benz 420SEL V8-4.2L Estimate $278 Dealer Estimate $515 Savings 46.02% Location Denver, CO
Service type Car Starter Repair for 1987 Mercedes-Benz 420SEL V8-4.2L Estimate $396 Dealer Estimate $731 Savings 45.79% Location Denver, CO
Service type Alternator Repair for 1991 Mercedes-Benz 420SEL V8-4.2L Estimate $422 Dealer Estimate $804 Savings 47.45% Location Denver, CO
Service type Intake Manifold Gaskets Replacement for 1986 Mercedes-Benz 420SEL V8-4.2L Estimate $489 Dealer Estimate $776 Savings 36.99% Location Portland, OR
Service type Oxygen Sensor - Rear/Lower/Downstream Replacement for 1991 Mercedes-Benz 420SEL V8-4.2L Estimate $210 Dealer Estimate $390 Savings 46.15% Location Portland, OR

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Meet some of our expert Mercedes-Benz 420SEL mechanics

Grzegorz

Grzegorz

338 Reviews; 37 years of experience
Excellent mechanic!
San Mateo, CA
May 10
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Todd

Todd

7 Reviews; 37 years of experience
Todd came early & was very conscientious about his work.
Sun City, AZ
December 5
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Genaro

Genaro

71 Reviews; 9 years of experience
Genaro arrived on time and was very courteous! He took care of business in a short time period!
Houston, TX
June 20
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Fast and easy Mercedes-Benz 420SEL services at your home or office.

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Answers to common Mercedes-Benz 420SEL questions

Q: Sunroof malfunctioning
Answered by Evan
It is possible that the cable or motor that moves the sunroof are broken or failing. There is also the possibility that there is some debris or object in the track for your sunroof. I would ask for help from...
Q: Car will only start after being jumped - 1991 Mercedes-Benz 420SEL
Answered by David
If this is a fuel issue, it's likely the check-valve in the fuel pressure regulator not holding pressure during shutdown. This valve keeps a low pressure in the fuel injection system for faster starts. If faulty, the fuel pump has...
Q: No fuel to pumps - 1991 Mercedes-Benz 420SEL
Answered by David
Since you know how to use the multimeter, you are 2 steps ahead already! Start with power to the fuses (fuel pump), then the fuel pump relay to follow the power path. It's also possible that the ignition switch (https://www.yourmechanic.com/services/ignition-switch-replacement),...
Q: Car running sluggish then dies - 1988 Mercedes-Benz 420SEL
Answered by Robert
Hello. I would check the fuel filter (https://www.yourmechanic.com/services/fuel-filter-replacement) first. If the filter is clogged then this will occur. If the fuel filter is fine then the air flow meter needs to be checked. This is the most common part to...

Fast and easy Mercedes-Benz 420SEL services at your home or office.

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Ben was great. He arrived early, completed the work quickly & cleanly, and was quite amiable. I didn't have to leave my home and got the maintenance completely with ease - 5 stars.



Patrick was very professional and polite. He inspected my car and found that it wasn't as bad as I thought it was. He is very friendly and I would DEFINATELY recommend Patrick to all my family, friends and co-workers.



Very impressed with the quality of work. Ned was on time and on budget. There were no surprise extra costs. Ned even helped me out with my other car, even though I didn't have an appointment for the other car. He took care of all of my car problems and he even found me a coupon for an oil change. I will be using this service again.

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