A small but familiar piece of hardware is disappearing from modern cars. Once a routine checkpoint for owners, it’s being quietly removed by automakers.

Picture this: you've installed a new programmer that adds 150-plus horsepower and more than 200 lb-ft of torque to your 7.3L Power Stroke. The only problem is, your E40D-4R100 automatic transmission ...

Question: I just read your column responding to a question about ignoring a check-engine warning light. I have a 2004 Lexus ES330 that had a check-engine warning light. After a couple of weeks I was ...

"The field has reached a turning point," said Dr. Paul A. Rhodes, CEO. "The capabilities required to enable broad adoption of sequence-based transmission detection ...

The MarketWatch News Department was not involved in the creation of this content. CAMBRIDGE, Mass., Dec. 23, 2025 /PRNewswire/ -- Next Gen Diagnostics (NGD) today announced that January 1 the Company ...

Q: I just read your column responding to a question about ignoring a check engine warning light. I have a 2004 Lexus ES330 that had a check engine warning light. After a couple of weeks I was able to ...