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 Fuel Filter Replacement for 1989 Mercedes-Benz 420SEL V8-4.2L Estimate $93 Dealer Estimate $158 Savings 40.94% Location Denver, CO
Service type Engine Mount - Rear Replacement for 1990 Mercedes-Benz 420SEL V8-4.2L Estimate $93 Dealer Estimate $161 Savings 41.92% Location Denver, CO
Service type Differential/Gear Oil Replacement for 1987 Mercedes-Benz 420SEL V8-4.2L Estimate $87 Dealer Estimate $148 Savings 41.18% Location Denver, CO
Service type Spark Plug Replacement for 1986 Mercedes-Benz 420SEL V8-4.2L Estimate $73 Dealer Estimate $120 Savings 39.13% Location Denver, CO
Service type Ignition Cable (Spark plug wires) Replacement for 1991 Mercedes-Benz 420SEL V8-4.2L Estimate $262 Dealer Estimate $480 Savings 45.37% Location Denver, CO
Service type Fuel Pump Replacement for 1990 Mercedes-Benz 420SEL V8-4.2L Estimate $471 Dealer Estimate $857 Savings 45.04% Location Denver, CO
Service type Brake Rotor/Disc - Rear Replacement for 1989 Mercedes-Benz 420SEL V8-4.2L Estimate $254 Dealer Estimate $448 Savings 43.29% Location Denver, CO
Service type Strut Assembly - Front Replacement for 1990 Mercedes-Benz 420SEL V8-4.2L Estimate $279 Dealer Estimate $505 Savings 44.83% Location Denver, CO

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Meet some of our expert Mercedes-Benz 420SEL mechanics

Brandon

Brandon

62 Reviews; 16 years of experience
Very informative!
Orlando, FL
January 7
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Jeffrey

Jeffrey

17 Reviews; 21 years of experience
Very professional, did a great job!
Land O' Lakes, FL
December 11
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Frank

Frank

18 Reviews; 36 years of experience
Very professional and was able to arrive prior to appointment time.....I will use him in the future.
Marietta, GA
December 26
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Answers to common Mercedes-Benz 420SEL questions

Q: Car will not start/no fuel - 1989 Mercedes-Benz 420SEL
Answered by David
If you are certain it is the fuel (i.e. you have confirmed good spark at the plugs), start with power to the fuses (fuel pump), then the fuel pump relay to follow the power path to the fuel pump. It's...
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: Ignition key not working - 1987 Mercedes-Benz 420SEL
Answered by Robert
It's quite likely the battery is dead, and all electrical functions are inoperative. All of the locks have mechanical actuators. A certified technician from YourMechanic can replace your battery (https://www.yourmechanic.com/services/battery-replacement) at your home or office and get you on your...
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),...

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A++ Highly recommended! Bryce was very professional, knowledgeable and punctual. He explained to me in detail exactly what he did and showed me the parts he replaced. I will definitely be booking Bryce for my next appointment.



I can't say enough about how pleased I am that I found YourMechanic and Raul. I'm from out of town and didn't know who to contact to fix a truck I was borrowing. I searched the web and found YourMechanic.....thank goodness. I found Raul to be professional, an outstanding mechanic and the price was more than fair.



Tom went above and beyond to make me as satisfied as I could be. His communication was excellent. Friendly and professional and best if all, my car is running great and he did it without unnecessary repairs. I would and will highly recommend Tom and Your Mechanic to everyone. Thanks, Rob Miller.

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