By Ian Bush

PHILADELPHIA (CBS) — Police in the suburbs are warning of a rash of luxury car thefts — with a common thread that makes these robberies easily avoidable.

Police have been tracking and investigating a trend of suburban robberies. A Range Rover and an Audi disappeared from the Blue Bell Country Club, another Rover got swiped from a driveway in Whitpain Township, a Mercedes SUV in Ambler, and another Benz in Bryn Mawr.

“It’s important to lock your vehicle,” said Radnor Police Lt. Chris Flanagan.

He said that advice is, or should be, obvious.

But in almost all of these and other recent high-end cases, cops tell us the keys were left inside the cars, making these expensive rides cheap targets for thieves.

Even less-pricey vehicles can be easier to track down these days, thanks to GPS and connected apps. But Flanagan wonders why drivers would leave themselves open to becoming victims in the first place.

Same goes for those who leave valuables inside, ripe for a smash-and-grab, or a pull-the-handle-and-grab, if the car’s unlocked.

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