2021 NISSAN Sentra HR16DE/MR20DD (B18)
B18 / Compact Sedan / Global (notably North America, Mexico, China, and some South American markets)
HR16DEMR20DDRegistro exacto de año/versiónSilver
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- CVT-related concerns reported in high mileage units
- Timing chain noise under extended use
- Routine suspension wear in harsh conditions
First checks
- Check CVT fluid condition and level
- Inspect timing chain and guides
- Brake system wear and fluid condition
Antes de cambiar piezas
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- Engine availability and specifications vary by market; North America primarily uses HR16DE (1.6L) while Mexico and some markets feature MR20DD (2.0L).
- Oil and coolant capacities given are approximate; always refer to owner's or repair manual per market and engine code.