Chevrolet Metro

The very small economy car sold as the Geo Metro until 1997 and as a Chevrolet after it, and it is a Suzuki: the Cultus, built by Suzuki and by the CAMI joint venture, sharing everything with the Suzuki Swift of the same years. So Suzuki material covers it and there is more of that than there is under either American badge. The 1.0 three-cylinder is the engine it is remembered for, and its idle behaviour is genuinely unlike a four's, so a rough-running complaint is worth comparing against a known-good example before it is treated as a fault. Simple enough throughout that a driveability problem is usually fuel, ignition or a vacuum leak.