Acura TL owners have reported 2 problems related to engine noise (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Acura TL based on all problems reported for the TL.
Engine has a pinging noise.
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all problems of the 2012 Acura TL
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After owning my 2012 Acura Tl for roughly 2yrs, I've become concerned with the engine workmanship. Acceleration seems to be at a loss between 30-45mph in between gear changes. It's almost as though the transmission doesn't know what to do. You have to either let up on the acceleration or increase your speed to avoid that annoying hesitation. The second problem is what I would describe as lifter/valve noise. The noise occurs when accelerating, intermittently though. Although it is embarrassing driving a vehicle that looks as good as the Tl looks and have it sound like an old chevy when you accelerate, I hate it. I took it to the dealer, they could not replicate the noise, of course. They told me the car was fine. I told them specifically I believed the noise was coming from lifter/valve. They told me it was probably poor gas selection. I explained to them I used the recommended premium octane/chevron. They had no answer. Lastly, my brakes are squealing, I told the Acura mechanic to please check my brake pads, he said they were perfectly fine and should not worry. He said the the rotors develop a blue film over time, and the squealing noise is normal. I couldn't believe it, I am supposed to accept that annoying brake noise. This is not what I expected from Acura/Honda, is this bad workmanship or poor materials being used by Acura to keep costs down on manufacturing.