Mongolia: The Growing Graveyard for End-of-Life Toyota Prius Hybrids

Mongolia has emerged as a primary end-of-life market for ageing hybrid vehicles imported from Japan, resulting in an environmental crisis as thousands of toxic batteries accumulate across the country without a proper disposal system.

Second-hand Toyota Prius cars now dominate Mongolian roads, ranging from the capital city of Ulaanbaatar to remote steppe regions. These vehicles are highly prized in the country for their fuel efficiency and durability, contributing to a vehicle fleet where hybrid vehicles account for approximately 45 per cent of Mongolia’s 1.5 million total vehicles.

The majority of these hybrids arrive in Mongolia already heavily used, with many batteries nearing the end of their functional lifespan. The harsh Mongolian environment, characterized by extreme cold and rough terrain, accelerates the degradation of these batteries, leading to faster failure rates than in other climates.

Hazardous Waste Challenges

The lack of a formal recycling infrastructure has turned the popularity of the Toyota Prius into a significant waste management problem. According to Munkhnasan Enkhtaivan, an official from Mongolia’s Transport Ministry, the country is facing serious challenges regarding the collection, storage, and disposal of hazardous waste from these vehicle batteries.

Because there is no established system for recycling high-voltage batteries, many are handled informally or simply dumped. This has led to hazardous materials being stored in open areas.

In Mongolia today, a discarded high-voltage battery might be sitting outside someone’s ger, in an open yard, where a child could easily be playing next to it.

Munkhnasan Enkhtaivan, Mongolia’s Transport Ministry official

The ubiquity of the vehicle in the country was illustrated by a Mongolian taxi driver who told the Singapore-based news outlet CNA that if you throw a rock in Mongolia, chances are you’ll hit a Prius.

Stranded Stockpiles and Export Bans

In the absence of government-led recycling programs, private collectors have attempted to fill the gap. Some individuals have traveled across the country to gather depleted batteries, with one collector in Ulaanbaatar claiming to have acquired tens of thousands of units.

However, these private efforts have been halted by a recent ban on the export of hazardous waste. This regulatory shift has left collectors with massive stockpiles of toxic batteries that can no longer be shipped out of the country for processing.

the waste remains within Mongolian borders. Enkhtaivan stated that these batteries and the associated waste are now staying inside the country.

The influx of these vehicles is part of a broader trend where cheap, end-of-life hybrid electric vehicles from Japan are sent to markets with fewer environmental regulations. While these cars provide affordable transportation for the Mongolian population, the long-term environmental cost is becoming evident as the batteries reach their final stage of decay in a landscape not equipped to handle them.