Q: Car acceleration is slow to respond to gas pedal

asked by on September 23, 2016

My car has 51,500 miles on it. I started to notice that when I accelerated and put my foot on the gas pedal it took a few seconds for it to accelerate and catch up. It feels like my transmission isn’t working right, too. I took it to 2 dealerships and they can’t figure it out because there is no check engine light that comes on. So they don’t know where to look. Do you have any ideas what might be wrong?

Transmission Fluid Service $125.08 - $440.73 Get a Quote
Car is slow to accelerate Inspection $79.99 - $89.99 Get a Quote

Hi there. From your description I am going to assume you try to accelerate and the engine speed does rise, but it feels like the transmission doesn’t engage until a higher engine speed and then it catches. In this case, it sounds like you have a slipping transmission. The first thing to have checked is the fluid level. A low fluid level can cause this situation and must be corrected soon. If the fluid level is lower than the standard requirement, there must also be a leak. If you would like an expert to inspect this firsthand, a certified technician from YourMechanic can come to your car’s location to diagnose the acceleration problem.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Car whistling, rough idle.

This sounds exactly like the symptoms of a vacuum leak. When the engine inhales air through an opening it is not supposed to is a vacuum leak. The whistling sound is due to the air being drawn in through a...

Transmission clicks and jump while shifting in stop and go traffic

Hello. This vehicle has a history of transmission problems. Most of the time it is because the second gear band fractures. When this occurs, it has trouble holding several gears properly and causing shifting issues. It may also be caused...

Starting and shaking issues on a 2007 Honda accord.

Hi there. Check the alternator and see if it is making a full charge to the battery. If the vehicle is having a slow start when cranking, either the battery has lost a charge and is low or the starter...

Fuel door won't click shut

The latch assembly that springs the door open is faulty internally. These can be removed and a new unit installed. Trim tools should be used to pry the fuel door latch unit out to prevent damage to the paint on...

My car is jerking and hesitating when accelerating

This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor reads the air intake as it is mixed with fuel prior to being injected into the motor. When this fails, this...

What can cause the drive belt to stop moving for a second or two, then come back on and repeat?

You should look at the lower crankshaft pulley to see if it is not spinning when the belt stops. If that is the case, then the crankshaft damper rubber is not gripping the hub and needs replaced. If the pulley...

My brakes make lots of noise and they vibrate

There are several high quality aftermarket brake parts available. Some noteworthy manufacturers are EBC, Wagner, Bendix and Bosch, to mention a few. The symptoms that you describe have multiple possibilities of causes that are good for you to be aware...

Hard shift when I take off

The first question that comes to mind regarding this issue is if the parking brake is being operated and if it is being operated correctly. Automatic transmissions use a pin, called a parking pawl, to lock the transmission in place...

Car starts, but doesn't stay started.

The problem you describe can be the crankshaft position sensor. The sensor is a major failure on these vehicles and can cause no starts or intermittent starts and stalls. Have a qualified mechanic test you car with an approved scanner...

Related articles

A Buyer’s Guide to the 2012 Mercedes-Benz ML350 BlueTec
The The 2012 Mercedes-Benz ML350 BlueTec is a safe vehicle that offers many standard features such as solid wood accents, thick leather on the seats, and memory buttons to save your seating position. The ride is comfortable as it has...
How Can I Tell If My Clutch Is Slipping?
For some drivers, shifting a manual transmission is second nature. Others prefer to rely on automatic transmissions. Drivers of automatic vehicles don’t have...
3 Essential Things to Know About Your Car’s Gear Shifter
The The gear shifter allows the vehicle to be put into different gears on a manual transmission. In an automatic transmission, the gear shifter is known as a gear selector. The gear shifter is normally located between the two front...