MUMBAI, Nov 1 (Reuters) - Credit Suisse downgraded India's top car maker, Maruti Suzuki , to neutral from outperform, following a run up in the stock price. The share had climbed 7.7 percent in October, while the main stock index edged 0.2 percent lower. Over the weekend, Maruti Suzuki, a unit of Japan's Suzuki Motor Corp , cited input costs and currency volatility as concerns after meeting street estimates with a 5 percent rise in quarterly net profit on strong demand. [ID:nSGE69S07X]