Volkswagen announced the recall Friday, saying no accidents or injuries have been recorded related to the problems on the 1999 to 2005 model year Passats.
Some Passats with an automatic transmission may have an underbody heat shield that could be subject to damage. And some with 1.8T engines have a fuel line that requires potential replacement.
Also, some all-wheel-drive Passats will be inspected for potential fuel tank ventilation valve damage.
Volkswagen plans to notify owners of the recall, but says drivers who smell fuel should take the vehicle to a Volkswagen dealer or authorized repair shop.