The Orion VI and VII are Old Gen buses ordered for NYCT and MTA Bus. Numbers include:
6350-6359 were Orion VI buses built in 1998-2000. These ten diesel-electric hybrid low-floor prototype buses were part of NYC Transit's Clean Fuel Bus program. 6350-6353 were rejects from the New Jersey Transit order, but retained the interior. All of them have retired from NYCT service by 2005 and operated under Williamsburg Depot in MTA Bus until retirement in 2013.
|6350-6353||Detroit Diesel Series 30|
w/ AC Traction Motors
|Lockheed Martin Hybridrive|
|43: American Seating 6466||Luminator MAX3000|
|6354, 6356, 6358-6359||36: American Seating 6468|
|6355, 6357||40: American Seating 6468|
7560-7684 are 2002-2003 Orion VII CNG (07.501) buses built in 2003.
They were originally ordered and built for MTA New York City Transit, but early May 2017, a few buses were transferred to MTA Bus Company to cover a bus shortage issue. These buses are expected to retire by 2018.
|Detroit Diesel Series 50G EGR||Allison B400R||37: American Seating 6468||Luminator MAX3000|
6365-6489 are 2002-2004 OBI Orion VII buses built in 2003-2004. These buses are operated by New York City Transit. These buses are a decent batch to the Hybrid fleet and were well received by the public.
|6365-6444, 6446-6489||Cummins ISB||BAE HybriDrive hybrid system||38: American Seating 6468 with padded fabric inserts||32||Luminator MAX3000|
Buses #6401-6402, 6468 & 6485 are Lithium-Ion Battery Equipped while other units are Hawker XT Lead-Acid Batteries Equipped.
7685-7819 are 2003-2004 Orion VII CNG (07.501) buses built in 2004. These buses are solely West Farms buses. 7691 and 7746 were repowered many times in their lives and retired by 2017. The remaining units will retire in 2018-19.
|7685-7690, 7692-7745, 7747-7819||Detroit Diesel Series 50G EGR||ZF 5HP592C||37|
American Seating American Seating 6468
|7691, 7746||Doosan GL11K||Allison B400R|
This order is a slight upgrade to the 2004 Orion VII Hybrid model. The most notable difference is the signage in use on these buses.
|Cummins ISB||BAE HybriDrive hybrid system||38: American Seating 6468 with padded fabric inserts||32||Luminator Horizon|
3500-3783 and 6690-6909 are 2006-07 Hybrid buses. The 3000 series are operated by MTA Bus Company and the 6000 series are operated by New York City Transit. However, as of 2017, a few 6000 buses were loaned to MTA bus a few times to adapt to ridership demands. This was the final order of Old Gens buses before the Next Gen buses.
One bus, 3563, has been converted to run on a conventional diesel engine to an automatic transmission by 2013. The bus has been evaluated in service to determine if it's feasible to convert other hybrid buses at MTA Bus Company. As the hybrids have aged, the expensive hybrid components have experienced a higher failure rate. MTA Bus Company routes also have conditions where the full potential of hybrids is not reached.
|3500-3562, 3564-3783, 6690-6909||Cummins ISB||BAE HybriDrive hybrid system||34|
Irwin i300 Model with padded fabric inserts
|3563||Cummins ISL||Allison World B400R WTEC III|