Compact sedans are unique for the Indian car market. Bred under the gamut of rules and regulations that determine the taxation, car makers have ensured Indian buyers get the maximum for the money they pay. We now have the Volkswagen Ameo, the newest entrant in the tricky compact sedan segment. And it brings the first real automatic and a dual-clutch gearbox at that to the game dominated by AMTs. So, based on our scientific rating methodology, here is how the automatic diesel compacts, the Maruti Suzuki Swift Dzire, the Tata Zest and the Volkswagen Ameo, fare amongst themselves.