Alexander Dennis Enviro 500: Fuel system — fuel rail

Affects Alexander Dennis Enviro 500 · 2017–2020 — about 310 vehicles.

The hazard

A fuel leak in the presence of an ignition source increases the risk of a fire.

What to do

Dealers will inspect the rail threads and fuel lines, and replace the rail as necessary, free of charge. Owner notification letters were mailed June 18, 2021. Owners may contact Alexander Dennis customer service at 1-951-244-9429.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational