Mercedes-Benz CLK320 Car is getting worse gas mileage Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(111)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(111)

Car is getting worse gas mileage Inspection Service

How much does a Car is getting worse gas mileage Inspection cost?

On average, the cost for a Mercedes-Benz CLK320 Car is getting worse gas mileage Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2003 Mercedes-Benz CLK320V6-3.2LService typeCar is getting worse gas mileage InspectionEstimate$114.99Shop/Dealer Price$132.49 - $145.62
1999 Mercedes-Benz CLK320V6-3.2LService typeCar is getting worse gas mileage InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2001 Mercedes-Benz CLK320V6-3.2LService typeCar is getting worse gas mileage InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2002 Mercedes-Benz CLK320V6-3.2LService typeCar is getting worse gas mileage InspectionEstimate$94.99Shop/Dealer Price$112.48 - $125.60
2004 Mercedes-Benz CLK320V6-3.2LService typeCar is getting worse gas mileage InspectionEstimate$94.99Shop/Dealer Price$112.55 - $125.72
2005 Mercedes-Benz CLK320V6-3.2LService typeCar is getting worse gas mileage InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2000 Mercedes-Benz CLK320V6-3.2LService typeCar is getting worse gas mileage InspectionEstimate$99.99Shop/Dealer Price$117.28 - $130.25
1998 Mercedes-Benz CLK320V6-3.2LService typeCar is getting worse gas mileage InspectionEstimate$99.99Shop/Dealer Price$117.94 - $131.39
Show example Mercedes-Benz CLK320 Car is getting worse gas mileage Inspection prices

Poor gas mileage, especially a sudden drop in fuel efficiency, can be blamed on a number of issues. It can also be an indicator of a much more serious issue that if left un-repaired, can develop into an expensive repair.

There are dozens of problems that can lead to a drop in gas mileage, some of them are serious and some can be easily corrected. Here are some of the more common issues that can affect the fuel efficiency of most cars.

How this system works:

The fuel system stores and supplies fuel to the car to help drive the engine. Fuel is mixed with air, atomized and vaporized in the engine intake system. It is then compressed in the engine cylinder and ignited which produces energy to move the pistons. There are different engine layouts and designs but most of them work in the same basic way.

When the system is working as designed, and under certain conditions, maximum fuel efficiency will be achieved. Numerous factors can have an affect on fuel efficiency so it is usually a constantly changing number but a serious and sudden drop in miles per gallon is cause for concern and the vehicle should be inspected.

Common reasons for this to happen:

  • Dirty Oxygen Sensor: An oxygen sensor measures exactly how rich or lean the exhaust gases are when they leave the combustion chamber. The data is used by the vehicle computer to adjust the amount of fuel entering the engine. If the sensor is dirty or failing it can lead to a drop in miles per gallon. It can also lead to failed emission tests and a rough idle.

  • Dirty Fuel Injectors: Fuel injectors spray fuel into the cylinders where it is mixed with air and ignited. Over time the fuel injector system can become clogged. This can lead to a drop in fuel efficiency as well as slow acceleration and the car not having enough power. If caught early, simply cleaning the injectors can solve the problem. As it progresses, the injectors may have to be replaced.

  • Bad or Dirty Spark Plugs: Spark plugs ignite the fuel in the combustion chamber. If they are dirty or working incorrectly, it can cause the engine to misfire, leading to poor engine performance. This can lead to a lack of power as well as a big decline in fuel efficiency.

  • Malfunctioning Mass Airflow Sensor: A mass airflow sensor detects the amount of air coming into the fuel injection system. It delivers that information to the vehicle's computer, which crunches the numbers and then delivers the proper amount of fuel to the air in the vehicle. A dirty airflow sensor will degrade fuel efficiently and lead to a rough idle and even stalling as the problem progresses.

  • Misaligned Tires: Tires that are low or out of alignment can lead to a drop in fuel efficiency. Checking the tire pressure and have the alignment checked on regular basis can help prevent this problem.

  • Defective Fuel Pump: Fuel delivery issues can drastically affect fuel efficiency. The fuel pump pulls fuel from the gas tank to the fuel injectors. The fuel pump can become clogged or malfunction. A bad fuel pump can lead to a rough running engine because it is not getting enough fuel. This will lead to a decline in gas mileage. If this issue is not addressed it will lead to a rough, idle, sputtering and stalling.

  • Clogged Fuel Filter: A clogged fuel filter will also cause problems with gas mileage. The fuel filter screens out contaminants in the fuel, and over time it will become clogged. Fuel filters need to be replaced periodically.

  • Stuck Brake Caliper: A stuck caliper on a disc brake or a stuck shoe on a drum brake can lead to a serious decline in gas mileage. In addition, any brake issue can make the vehicle dangerous to drive. If the decline in efficiency is accompanied by the vehicle pulling to one side, the brake system should be inspected immediately.

What to expect:

A top-rated mobile mechanic will come to your home or office to determine the source and cause of the poor gas mileage issue and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How it's done:

A mechanic will inspect your fuel injectors, spark plugs, airflow sensor, tires and other important components to reach an accurate diagnosis. It may be necessary for the mechanic to test drive the car to produce acceptable results and pinpoint the source of the problem.

How important is this service?

A few of these issues are easy to fix but others are an indicator of a much more serious problem. Issues related to the fuel system will eventually lead to a rough running engine, stalling, and a car that won’t start at all.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(111)

Rating Summary
100
5
1
0
5
100
5
1
0
5

Richard

21 years of experience
461 reviews
Richard
21 years of experience
Mercedes-Benz CLK320 V6-3.2L - Horn does not blow - Marietta, Georgia
Friendly, excellent mechanical knowledge, diagnosed and fixed the problem on the spot and saved me lots of $$$'s compared to dealership estimate.

Dwayne

20 years of experience
9 reviews
Dwayne
20 years of experience
Mercedes-Benz CLK320 V6-3.2L - Oil Change - Deerfield Beach, Florida
Great Convenience!

Michael

21 years of experience
244 reviews
Michael
21 years of experience
Mercedes-Benz CLK320 V6-3.2L - Water Pump - Rancho Cucamonga, California
Michael deserves a full 5 stars but giving him 4 stars for now and will upgrade it to 5 stars once he finishes the job. He was on time and friendly. He is smart, He had to replace the water pump which he did and he cleaned up the space after the work . So he was good. The reason for the 4 stars is he forgot to connect the coolant temperature sensor. So the fan was blowing high and the engine light came on and no reading on the coolant temp meter on the dashboard. But he scanned for codes and realized it was the temperature sensor. While connecting it he broke it but he still gets 4 stars because he admitted right away that he had broken it. He was upfront and honest instead of trying to cover it up and shift the blame, Speaks volumes about his character, He sad it would be replaced and fixed at no extra charge and he would come back and finish it after informing yourmechanic tomorrow as the office had closed. He will get his 5 stars once he finishes it. Yourmechanic has also been very good at resolving any issues on the work done and I expect that tomorrow when their office opens they will resolve it. So will give a 5 star rating when the job is completed. Hoping there are more upright and honest mechanics like Michael which is not easy to find,

Enrique

21 years of experience
244 reviews
Enrique
21 years of experience
Mercedes-Benz CLK320 V6-3.2L - Brake Pads Replacement (Rear) - Orlando, Florida
He was on time ,courteous and above all professional which inturn made me feel comfortable with him working on my car.

Excellent Rating

(111)

Rating Summary
100
5
1
0
5
100
5
1
0
5
Number of Mercedes-Benz CLK320 services completed
1221+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How to Buy Good Quality Brake Pads
Brake Brake pads sound cushy - however they’re anything but soft and snuggly. These components attach to the brake calipers in order to stop the discs (also known as rotors). The calipers squeeze the pads against the discs, which are...
How to Replace an ABS Speed Sensor
The Anti-Lock Braking System uses speed sensors to make sure your wheels are synced when braking. Most modern cars are equipped with this sensor.
Industry News for Automotive Techs: October 8-14
50 MPG Chevrolet Cruz Diesel, Mazda's G-Vectoring drive system, Uber and Volvo collaborate on autonomous cars, and Hubb's new reusable oil filter.

2002 Mitsubishi Montero Sport XLS is leaking water from the back of the engine by the firewall. What is the name of that pipe?

The pipe that connects to the hose on the back of the engine is the supply pipe to the heater core. If you need further assistance with a coolant leak (https://www.yourmechanic.com/services/oil-fluid-leak-inspection), then seek out a professional, such as one from...

If i replace transmission and motor mounts do I need to replace the transmission also?

It doesn't sound like there is any reason for you to replace the transmission. The motor mounts and transmission mounts are flexible rubber supports that keep the engine and transmission in place while preventing their vibration from getting to the...

My 09 Mazda 3 got a code it was p2188

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com