Retired MTA Regional Bus Operations demonstration bus fleet
The Metropolitan Transportation Authority has tested single buses from time to time, usually on loan from the manufacturer.
| Year | Builder and model name | Length | Image | Powertrain | Numbers | Total | Notes | |
| 1979 | Grumman-Flxible 870A | 40 | Detroit Diesel series 8V71T Allison V730 | 100 | 1 | This bus was purchased by the MTA and renumbered to 199. It was not built to the same specifications as the rest of the order. For more information, see here. | ||
| 1979 | General Motors Corporation RTS-03 | 40 | Detroit Diesel series 6V71 Allison V730 | 200 | 1 | This was the first New York City Transit Rapid Transit Series bus, and a prototype for future orders. | ||
| 1981 | Hino Motors | 40 | Hino diesel engine | 950-952 | 3 | These three buses were tested in New York and eventually returned to the manufacturer. | ||
| 1981 | Renault PR100 | 40 | Renault engine | 960-961 | 2 | These two buses were tested in New York and eventually returned to the manufacturer. | ||
| 1982 | DAC 117 UD | 55.77 | N/A | 1300-1301 | 2 | These articulated buses were tested by Metropolitan Suburban Bus Authority in Nassau County and eventually were sent back to the manufacturer. | ||
| 1983 | MAN SG-310-16.5-2A | 60 | MAN D2566 MLUM Renk-Doromat 874B | 8990 | 1 | This bus was tested in Staten Island for express bus service. It was eventually sold to the Westchester County DOT, becoming bus 661, and has since been scrapped. | ||
| 1983 | Prevost Car Marathon | 45 | 8993 | 1 | This bus was tested in Staten Island for express bus service. | |||
| 1983 | Neoplan USA AN460 suburban | 60 | Detroit Diesel series 8V92TA Allison HT741 | 8994 | 1 | This bus was tested in Staten Island for express bus service. | ||
| 1983 | Eagle Bus Model 10-SC | 40 | N/A | 8998-8999 | 2 | These buses were tested in Staten Island for express bus service. | ||
| 1984 | Bus Industries of America 01.508 suburban | 40 | Detroit Diesel series 6V92TA | 9900 | 1 | This bus was tested in Staten Island for express bus service and was eventually sent back to the manufacturer. This bus was diverted from an order by Capital District Transportation Authority in Albany, New York. | ||
| 1984 | MAN Americana | 40 | MAN D2566 MLUH Renk-Doromat 874B | 9901 | 1 | This bus was tested in Queens for local bus service. | ||
| 1983 | Motor Coach Industries MC-9A | 45 | Detroit Diesel series 6V92TA Allison HT740 | 5950 | 1 | This bus was an Academy Bus unit leased from New Jersey Transit and tested in Staten Island for express bus service. | ||
| 1985 | General Motors Corporation RTS-06 suburban | 40 | Detroit Diesel series 6V92TA Allison V730 | 9902 | 1 | This bus was tested in Staten Island for express bus service. | ||
| 1989 | Ontario Bus Industries 01.508 CNG | 40 | Cummins L10G | N/A | 1 | This bus was a compressed natural gas demonstration bus. | ||
| 1989 | Ontario Bus Industries 05.501 | 40 | Detroit Diesel series 6V92TA Allison HTB748 | 81990 | 1 | This bus was tested in Brooklyn and would also demo with New Jersey Transit. It was eventually sold to Transit Windsor in Ontario, Canada, becoming bus 499, and has since been scrapped. | ||
| 1992 | Volvo B58E | 44 | Volvo Engine | 9255-9733-9737-? | 4 | These buses were tested in a bus rapid transit demonstrative line in Manhattan, based in Curitiba Transport System. Made in Brazil by Vlvo with Marcopolo and Caio bodies. Nicknamed Speedybuses by New York City residents. They returned to Curitiba after few days in New York City. | ||
| 1985 | Neoplan USA AN460 | 60 | Detroit Diesel series 6V92TA Allison HTB748 | 81992 | 1 | This bus saw revenue service in Manhattan on the route M15 before being returned to Neoplan USA. It was eventually sold to Tri-County Transit, becoming bus #846. | ||
| 1993 | Neoplan USA AN440 suburban | 40 | Detroit Diesel series 6V92TA | 81993 | 1 | This bus saw express service in Staten Island before being returned to Neoplan USA. | ||
| 1993 | Motor Coach Industries 102C3 | 45 | Detroit Diesel series 6V92TA | 81994 | 1 | This bus saw express service in Staten Island before being returned to Motor Coach Industries. | ||
| 1994 | Flxible Metro D 40102-4D | 40 | Detroit Diesel series 50 Allison VR731RH | N/A | 1 | This bus saw local service in Manhattan and Brooklyn before being returned to Washington Metropolitan Area Transit Authority. | ||
| 1996 | Orion Bus Industries 06.501 | 40 | Detroit Diesel Series 30 Lockheed Martin HybriDrive | N/A | 1 | This was New York City Transit's first hybrid and its first low floor test bus. It features three axles as well as three entrance and exit doors. The bus has since been returned to Orion Bus Industries. | ||
| 1997 | New Flyer Industries D40LF | 40 | Detroit Diesel series 50 | F1997 | 1 | This bus has been returned to New Flyer Industries. | ||
| 1998 | Northrop Grumman Advanced Technology Transit Bus | 40 | Cummins CNG engine and electric propulsion system | ATTB-3 | 1 | Also called "Stealth Bus." This bus was built from a composite material to make it stronger, lighter, and more durable. Another notable design feature is a zero-emission propulsion system. The bus was tested in Brooklyn and it has been returned to Northrop Grumman. | ||
| 1998 | Nova Bus RTS-06 Hybrid | 40 | Cummins ISB 5.9L Allison Es Hybrid System | 9900 | 1 | This was the second hybrid test bus for New York City Transit. This bus has been returned to Nova Bus. | ||
| 1998 | Nova Bus LFS | 40 | Detroit Diesel series 40E Allison B400R Gen III | 995 | 1 | This bus has been returned to Nova Bus. | ||
| 1999 | New Flyer Industries D60LF | 60 | Detroit Diesel series 50 Allison B500R Gen III | 3064T | 1 | This bus saw local service in Manhattan before being returned to Metro Transit in St. Paul, Minnesota. | ||
| 2005 | Gillig Phantom Hybrid | 40 | Cummins ISB 5.9L engine Allison EP40 Hybrid system | 5770 | 1 | This bus tested the GM-Allison hybrid electric drive. It ran throughout Manhattan and The Bronx in 2005, but has since been returned to Gillig. | ||
| 2003 | Van Hool AG300 | 60 | Cummins ISM 10.8L Voith D864.3E | N/A | 1 | This bus was borrowed from AC Transit in Oakland, California. | ||
| 2006 | New Flyer Industries D60LF | 60 | Caterpillar C9 | N/A | 1 | This bus was borrowed from New Flyer for demonstration purposes. | ||
| 2006 | ElDorado National Transmark RE PHEV | 30 | Unknown powertrain systems | 1822 | 1 | This Bus was tested by Long Island Bus and has since been returned to ElDorado National. | ||
| 2007 | Orion Bus Industries 07.501 Next Generation | 40 | Cummins ISB 5.9L ULSD and BAE Systems HybriDrive | 1292, 1294, 1295 | 3 |
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| 2007 | DesignlineMK-IV hybrid | 35 | Capstone C30 MicroTurbine | 9900 | 1 | This bus, owned by Wachovia Bank, saw local service in Manhattan and Queens. | ||
| 2007 | Citaro G | 58.85 | Mercedes Benz OM 457 hLA, BlueTec 4 Voith D864.3E | 0051 | 1 | This bus saw local service in Manhattan before being returned to Mercedes Benz. | ||
| 2007 | Nova Bus LFS | 62 | Cummins ISL-330 EPA-2004 Voith D864.5 | 0054 | 1 | This bus was tested under New York City Bus. It was returned to Nova and was sold to Saint John Transit in September 2009. | ||
| 2008 | Prevost Car X3-45 | 45 | Detroit Diesel Series 60 EGR Allison B500R Gen IV | 0052 | 1 | This was tested on Staten Island and Bronx express routes. | ||
| 2008 | Van Hool TD925 | 44.5 | Cummins ISM 450 with ZF AStronic 12 speed transmission | 0053 | 1 | This bus was tested by MTA Bus and New York City Transit. | ||
| 2008 | Nova Bus LFS | 40 | Cummins ISL-280 EPA-07 Allison B400R Gen IV | 0055 | 1 | This bus was tested under both MTA Bus and New York City Bus and was returned to NovaBus. | ||
| 2010 | New Flyer Industries Xcelsior | 41.2 | Cummins ISL-280 EPA-07 8.9L Allison EP40 hybrid system | 0058 | 1 | This bus was tested under New York City Bus and was placed in local service on the B6 in Brooklyn. It was returned to New Flyer and was sold to Academy Bus in August 2015. | ||
| 2011 | Nova Bus LFX Artic | 62 | Cummins ISL9 EPA10 ZF 6AP1700B | 0059 | 1 | This bus was tested under New York City Bus and was placed in local service on the M15 in Manhattan. It was returned to Nova and was eventually sold to Clemson Area Transit in December 2012. | ||
| 2013 | BYD Auto K9 electric bus | 39.37 | Permanent magnet synchronous propulsion motor | 0060 | 1 | This bus was tested under New York City Bus and was placed in local service on several routes in Manhattan. | ||
| 2014 | New Flyer Industries Xcelsior | 40 | Cummins ISL9 EPA-10 Allison H 40 EP hybrid system | E31 | 1 | This bus was tested under MTA bus company out of JFK depot in Queens. | ||
| 2017 | Proterra Catalyst | 40 | UQM PowerPhase® HD 220 Electric Drive EATON EEV-7202 | 0021 | 1 | This bus was tested under New York City Bus out of Grand Av depot in Queens. | ||
| 2017 | Alexander Dennis Enviro500 "Super-Lo" | 45 | Cummins L9 EPA-17 Allison B500R Gen V | 0022 | 1 | This bus was tested under New York City Bus and operated on the X17J on Staten Island and Manhattan. | ||
| 2018 | Motor Coach Industries D45 CRT LE | 45 | Cummins ISX12 Allison B500R Gen V | 0023 | 1 | This bus was tested under New York City Bus and MTA Bus. |