YOU SAID:
Service your emissions system immediately.
INTO JAPANESE
直ちに排ガスシステムを修理してください。
BACK INTO ENGLISH
Repair the exhaust gas system immediately.
INTO JAPANESE
排気ガスシステムは直ちに修理してください。
BACK INTO ENGLISH
The exhaust gas system should be repaired immediately.
INTO JAPANESE
排気ガスシステムは直ちに修理する必要があります。
BACK INTO ENGLISH
The exhaust gas system must be repaired immediately.
INTO JAPANESE
排気ガスシステムは直ちに修理する必要があります。
BACK INTO ENGLISH
The exhaust gas system must be repaired immediately.
That didn't even make that much sense in English.