Toyota Lexus IS 200t XE30 — Reliability
Lexus badge; BMW B48 engine
Reliability Summary
Engine
8AR-FTS — 68/100
ACCEPTABLE
Known Issues
5
Engine in this model
Known Issues Across All Engines
| Issue | Engine | Severity |
|---|---|---|
| Exhaust valve-guide wear — misfire, A/F imbalance, limp mode (TSB L-SB-0007-21) | 8AR-FTS | high |
| Turbo overboost and bypass-valve faults on 2015–2016 builds | 8AR-FTS | moderate |
| Water pump coolant leak (belt-driven pump) | 8AR-FTS | moderate |
| Fuel flow-control valve and rail-pressure fault codes (2015–2017) | 8AR-FTS | minor |
| Vacuum regulating valve surge and buzz (2015–2017 builds) | 8AR-FTS | minor |