The intake manifold gasket may develop external engine oil leak. The manifold gasket will need to be replaced to correct this issue.
Problems for specific Buick Regal years:
Car problem reports
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Newest reported Buick Regal problems
The front struts may show signs of wear, or be excessively bouncy ride at freeway speeds. This may begin to occur at around 75,000 miles.
The steering may develop a clunk type noise from the upper intermediate steering shaft. Our technicians tell us that you should check with your local GM dealer to find out what the latest repair is for this condition.
The high pressure power steering hose will commonly leak fluid; it should be replaced.
When engine is warm and coming to a stop and foot of the pedal and braking the engine stalls ... no hissing sounds on brake booster. Car will not stall if i down shift to third or second on auto transmission.
Fuel injectors can short-circuit electrically causing a rougher than normal idle and reduced performance.
The anti-lock brake (ABS) accumulator may fail causing loss of power brake assist. (The brake pedal will become very hard.)
The power window motors and switches are prone to failure.
The engine temperature sensor wire for the engine temperature gauge, or warning light, may touch the rear exhaust manifold causing a short to ground causing erratic operation of the temperature gauge or warning light.