New Jersey requires emissions testing every two years for vehicles model year 1996 and newer with a GVWR of 8,500 lbs or less, 5 model years old and older.
Diesel Vehicles:
Light duty (8,500 lbs or less) diesel powered vehicles model year 1997 and newer, are required to undergo diesel emissions testing.
Exemptions:
- New vehicles for the newest five (5) model years
- Vehicles model year 1995 & older with a GVWR 8,500 pounds or less.
- Gasoline powered vehicles registered passenger, model year 2007 & older with a GVWR 8,501 to 14,000 pounds.
- Vehicles model year 2013 & older with a GVWR 14,001 pounds or more.
- Vehicles registered as "historic vehicles"
- Approved Collector Vehicles which are less than 25 years old
- 100% Electric Vehicles
For more information visit: https://www.state.nj.us/mvc/
New Jersey Statutes
§ 39:3-70. Mufflers
Every motor vehicle having a combustion motor shall at all times be equipped with a muffler in good working order and in constant operation to prevent excessive or unusual noise and no person shall use a muffler cut-out, bypass, or similar device upon a motor vehicle on a highway.
Historic
Available for vehicles that are at least 25 years old and used only for exhibition and educational purposes.
Street Rod
Available for modified antique vehicles manufactured before 1949 that are registered in a New Jersey street rod club which is fully affiliated with the National Street Rod Association.
YOM
No law on YOM plates. Not allowed.