By on September 29, 2015

2011 Scion tC

TTAC Commentator Sam Hell Jr. writes:

Hi, Sajeev!

I read with deep concern your notice that the Piston Slap mailbag was empty. You kindly answered my previous query about putting more conservative tires on my ’11 automatic tC (now at 51,000 miles), despite the fact that I erroneously addressed the email to your parasitic e-twin Sanjeev, and I’m happy to pester you/be of service once more. Please find, below, my questions, and thank you for your time.

(Read More…)

By on September 15, 2015

Raphael Orlove over at Jalopnik has fine, fine reporting
that the next-generation Audi S4 will sport a conventional 8-speed torque converter automatic instead of the company’s 7-speed dual-clutch unit.

The reason? The S4’s new turbocharged, 3-liter V-6 that produces 354 horsepower creates just enough torque (368.8 pounds-feet of torque, to be exact) to disqualify the automated manual. According to Orlove, the automaker didn’t rule out a DSG in the S4’s future, but said it just won’t be available at launch next year. (Read More…)

By on September 1, 2015


TTAC commentator Anomaly149 writes:

Sajeev, here’s one for you:

I have a CVT-equipped 2004 Saturn Ion Quad Coupe with ~140,000 miles. While you can write a book on the things that are weird with the car (key won’t release from cylinder sometimes unless you push this button inside the steering column, sometimes the neutral safety switch actuator machine-guns when stopped at a stoplight, it eats front sway links like it’s a contest, etc.), so far it’s been reliable and efficient. (Read More…)

By on August 25, 2015

2015 Jeep® Grand Cherokee Overland

The National Highway Traffic Safety Administration is investigating complaints that gear selector handles on Jeep Grand Cherokees may slip out of park and cause the car to roll away, Automotive News is reporting.

Owners have detailed several complaints to NHTSA who said their Grand Cherokees rolled away while parked, including one person in Michigan who said a child was injured exiting the rollaway vehicle.

A similar transmission selector was used in the 2014 Chrysler 300. An owner complained of a similar problem in that car, where it rolled away and crashed into two other vehicles.

(Read More…)

By on August 4, 2015



Leather is better. (photo courtesy:

Nathaniel writes:


Long time listener, first-time caller. I’m responding to your plea for new Piston Slap questions. I purchased a gently-used 2008 GMC Yukon Denali AWD a couple of months ago. Other than its appetite for fuel, the only negative is that it has 141,000 miles. I believe the previous owner changed the transmission fluid at 100,000 miles (Carfax shows that the transfer case fluid was changed at this point, and I can’t imagine doing that and not doing the transmission). The fluid was relatively clean but I changed out several quarts via the dipstick tube using a fluid extractor after I purchased the vehicle, replacing them with the specified Dexron-VI. I believe the fluid level is correct but it’s difficult to read.

On a recent road trip, the 6-speed automatic (6L80E) transmission stumbled during the 2-3 shift while driving through the mountains and went into a failsafe mode. The check engine light came on. I pulled over, turned the ignition off and on again, and the truck operated normally. The CEL remained on for the next several ignition cycles. When I called OnStar to obtain the fault code, they could not retrieve it because the CEL was no longer on.

(Read More…)

By on July 15, 2015

Mercedes-Benz CLA45 AMG. Photo courtesy Autoblog

Mercedes-AMG’s incredibly busy 2.0-liter turbocharged engine will be busier next year.

The performance division of Mercedes-Benz announced Tuesday (via AutoGuide) the 2016 CLA45 and GLA45 engines would get horsepower bumps from 355 hp to 375 hp.

That boosts the horsepower-per-liter output from the little Affalterbach mills to 187.5 hp/l.

(Read More…)

By on July 7, 2015

2015 Dodge Challenger 6-speed manual shifter

With news that BMW’s M division might give up offering manual transmissions altogether along with the plethora of automatic-only performance options from other automakers on the market, the battle to keep the manual looks bleak.

Not only that, but automatics seem to just be the better choice for a number of other non-performance options as well.

(Read More…)

By on May 15, 2015


Not so Holy Roller? (photo courtesy OP)

TTAC commentator Celebrity208 writes:

Sajeev, here’s an update to an old Piston Slap that I wanted to share: overall I love my van.

My wife and I have used it to keep visiting family together when touring DC (instead of using 3 cars we took one van). As I eluded to, we also used it for a Christmas road trip/road tour through Cleveland, Toledo, Cincinnati and Evansville (IN). Lemme tell you, attending to a crying child in the back is a breeze in this thing. In less than 10 seconds the wife can be re-buckled a row or two back to deal with a toddler that dropped [fill in the blank].  (Read More…)

By on March 25, 2015


2003_acura_tl_picture (12)

Audi 5000 much? (photo courtesy:

Mark writes:

Hi Sajeev,

I have a 2003 Acura TL-S with 106K miles. I bought the car in 2013 with 84K and it was/is in excellent shape. I checked and made sure the car had the transmission recalls performed (I know there were a lot of issues with Honda/Acura 5 speed autos) Back in July I noticed on a hot and humid day it was difficult to move the gear selector from P to Drive. It seemed stiff but there were no other indicators of transmission issues.  (Read More…)

By on March 18, 2015


A path too Brutalist? (photo courtesy:,concrete)

TTAC commentator Raincoaster writes:

Hi Sajeev,

I currently drive a 2011 Honda Fit(Manual) and I’m mildly interested in a CVT for my next car purchase. I have never driven one, and one thing that gives me pause is all the “fake gears” that they set them up with. I understand that this is to make them drive in a manner familiar to traditional automatic transmissions, but this seems unnecessary and possibly inefficient to me. Are there any cars/companies that don’t fake it and just let the engine/trans cook up the best ratio at any given time? I’d like to test drive something like that to see how it feels. (Read More…)

Recent Comments

New Car Research

Get a Free Dealer Quote


  • Contributing Writers

  • Jack Baruth, United States
  • Bark M., United States
  • Chris Tonn, United States
  • Doug DeMuro, United States
  • Steven Lang, United States
  • Brendan McAleer, Canada
  • Vojta Dobes, Czech Republic
  • Matthias Gasnier, Australia
  • W. Christian 'Mental' Ward, United States
  • Cameron Aubernon, United States