Skip the auto shop - Our mechanics make house calls

Q: Is there any reason that a mechanic would have put a MT58 battery in instead of a MT86?

asked by on

I've been dealing with the same company for the last 3 years, including the several batteries that I have had through them. I got the original one in Feb of 2015 and have had 4 more under warranty since then. Every time they put one in, it lasts anywhere from a couple of weeks to a couple months before it dies again. This week I was driving and my gas stopped, brakes locked and my power steering went. The new garage said this was because my battery was so fried, but that it was also a MT58, which is much too small for my car. This is obviously wrong and I'm thinking that they have always used the MT58, but just charged me for the MT86. Price doesn't make the overall difference but it obviously plays a huge role in the overall well-being of my car. What do you think?

My car has 92000 miles.
My car has an automatic transmission.

A: I have verified with Interstate that your c...

I have verified with Interstate that your car does in fact use the MT-86 battery. It is unclear why your mechanic may have installed the MT-58, but this may very well be the cause of your batteries not lasting more than a few months. When a battery is subjected to starting conditions or demands that are much greater than what it is designed to handle as you can imagine, this will very quickly destroy it. I would recommend having an expert from YourMechanic come to your location to diagnose and replace your battery with the correct application.

Was this answer helpful?
Recommended services
Get a Quote

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Get a quote

What others are asking

Q: do i need a new motor?

Hi there. It is very difficult to tell you for certain that you need a new motor or new vehicle based on reading a description. However, what you're describing is typically associate with an overheating problem or a head gasket...

Q: car was running fine, now no crank or start. battery is good. what should I be checking.

Your Kia has what is known as an electronically controlled charging system which is unlike most vehicles that have an alternator which charges the battery. Your charging system is controlled by the car's ECM (Electronic Control Module). When the charging...

Q: Intake manifold stuck open

I'm guessing that you mean your throttle body is stuck open? These vehicles are known for having problems with their throttle bodies. I would ask for help from one of the mechanics at YourMechanic to come and examine your vehicle...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...