The Pontiac Vibe, sharing its platform and engines with the Toyota Matrix, is
not known for a widespread or significant problem with sludge build-up. While sludge can occur in any car due to infrequent oil changes, poor quality oil, or short trips that don't allow the engine to reach operating temperature, it's not a particularly prevalent issue specific to the Vibe.
However, like any car, neglecting regular maintenance, using incorrect oil, or consistently driving short distances can increase the risk of sludge formation in a Pontiac Vibe engine. Therefore, adhering to the recommended maintenance schedule (oil changes, etc.) as specified in the owner's manual is crucial to prevent sludge and other engine problems.
