When it comes to replacing your daily driver, “used” is often the smartest buy. A low-mileage model from a few years back can save you real money while offering nearly all the same features. And as long as you do your homework, a well-maintained used car is every bit as serviceable as something brand new.

But that might not be true for much longer.

In states without strong right-to-repair protections, shops are already reporting cases where newer vehicles simply can’t be serviced without dealership intervention.

Automakers are steadily locking down the data that modern cars generate. If they succeed, independent repair shops, do-it-yourself mechanics — and your wallet — will feel the squeeze. The stakes are enormous: 273,000 repair shops, 900,000 technicians, and 293 million vehicles co

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