Audi V8 Quattro 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

(2,467)

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

(2,467)

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 Audi V8 Quattro Car is getting worse gas mileage Inspection is $105 with $0 for parts and $105 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1993 Audi V8 QuattroV8-4.2LService typeCar is getting worse gas mileage InspectionEstimate$124.99Shop/Dealer Price$139.69 - $150.72
1994 Audi V8 QuattroV8-4.2LService typeCar is getting worse gas mileage InspectionEstimate$104.99Shop/Dealer Price$119.72 - $130.77
1990 Audi V8 QuattroV8-3.6LService typeCar is getting worse gas mileage InspectionEstimate$104.99Shop/Dealer Price$119.72 - $130.77
1991 Audi V8 QuattroV8-3.6LService typeCar is getting worse gas mileage InspectionEstimate$104.99Shop/Dealer Price$119.68 - $130.70
1992 Audi V8 QuattroV8-4.2LService typeCar is getting worse gas mileage InspectionEstimate$104.99Shop/Dealer Price$119.75 - $130.82
Show example Audi V8 Quattro 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 Audi mechanics

Real customer reviews from Audi owners like you.

Excellent Rating

(2,467)

Rating Summary
2,288
87
19
12
61
2,288
87
19
12
61

David

16 years of experience
637 reviews
David
16 years of experience
Audi Q7 V6-3.0L Turbo - Brake Rotor/Disc Replacement (Front, Rear) - Sacramento, California
Great job. Very knowledgeable mechanic who worked on replacing my Audi brakes and rotors.

Scott

36 years of experience
920 reviews
Scott
36 years of experience
Audi Q7 V6-3.0L Turbo - Oil Change - Scottsdale, Arizona
Great job as always

Justin

8 years of experience
372 reviews
Justin
8 years of experience
Audi Q7 V6-3.0L Turbo - Oil Change - Boca Raton, Florida
Great job

Lucas

21 years of experience
893 reviews
Lucas
21 years of experience
Audi A6 Quattro V6-3.0L Turbo - Oil/Fluid Leak - Los Angeles, California
very knowledgeable

Excellent Rating

(2,467)

Rating Summary
2,288
87
19
12
61
2,288
87
19
12
61
Number of Audi services completed
27137+
services done by our mechanics
TOTAL NUMBER OF EXPERT Audi MECHANICS
700+
experts on our platform

Recent articles & questions

Is It Unsafe to Continue Driving a Vehicle with Broken Wheel Speed Sensors?
Car wheel speed sensors are an important safety feature. It helps the ABS system work when you need to make an emergency stop.
P0035 OBD-II Trouble Code: Turbocharger or Supercharger Bypass Valve Control Circuit High
P0035 P0035 trouble code definition P0035 is the code for Turbocharger or Supercharger Bypass Valve Control Circuit High What the P0035 code means It is necessary to understand that each manufacturer has a slightly different definition for this code as...
How to Replace an Air Suspension Air Compressor
Signs of a bad air suspension air compressor include a car that rides low or when a car's ride height doesn't change when its load changes.

Do I need to change the timing belt or chain @ 100,000 miles ?

The timing belt recommended change intervals for extreme cold or hot conditions is recommended to be changed every 60,000 miles. There is no timing chain in this motor it has a timing belt.

Changed rack and pinion on 2013 Dodge Ram 1500 has electric assist steering now isn't working ? The steering fuse is good , is the

You will need to have the steering system scanned and reset the steering angle using an scanner that has the capability to do the programming of the new steering rack to the computer.

When i start my car, the rpm meter goes up to the number 5 and doesn't go back down, what could the problem be?

Hi Ariana. Thanks for contacting us today. Assuming that your engine is not winding up that high and it's just the gauge that is doing this, it's probably due to a damaged electrical relay or fuse that powers the tachometer...

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