The Recall Desk
Our severity:SevereNHTSA·21V468000·Announced 2021-06-23

Alexander Dennis Recalls 2017-2020 Enviro 500 Buses for Fuel Leak Risk

Alexander Dennis is recalling 2017-2020 Enviro 500 buses because a sealing washer defect may cause high-pressure fuel leaks, increasing fire risk.

What this means for you

Our assessment, not the agency’s: severity 4/5 (Severe).

The hazard poses a serious risk of illness, injury, or structural failure. Stop using the product immediately and contact the manufacturer for a refund or repair.

Our severity reasoning: The recall involves a fuel leak that increases the risk of fire, which constitutes a significant injury/property-damage risk under the rubric for vehicle defects.

Plain-English summary

Alexander Dennis, Inc. is recalling certain 2017-2020 Enviro 500 buses. The recall addresses a defect in the sealing washer, which may not seat correctly in the pilot bore holes. This issue allows the high-pressure fuel rail assembly to leak.

A fuel leak in the presence of an ignition source increases the risk of a fire. No specific injuries or fatalities are reported in the source text.

Dealers will inspect the rail threads and fuel lines and replace the rail as necessary, free of charge. Owner notification letters were mailed on June 18, 2021. Owners may contact Alexander Dennis customer service at 1-951-244-9429 or the NHTSA Vehicle Safety Hotline at 1-888-327-4236.

The recalled product

Product
ALEXANDER DENNIS ENVIRO 500
Brand
ALEXANDER DENNIS
Manufacturer
Alexander Dennis Inc.
Category
Vehicle — Bus
Hazard
Affected units
310

Is your product affected?

Check your packaging against the codes below. If any of them match, the product is part of this recall.

Model numbers (1)

  • ENVIRO 500

Distribution

Distributed nationwide across the United States.

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