Jeepney Emissions Worsen Filipino Air Pollution

Jeepneys carry around 40 million passengers daily across the Philippines, making them the backbone of public transport. They also account for 94 percent of urban soot mass in Metro Manila, according to a study published in The Lancet Planetary Health. That figure captures the core tension: a system that moves millions also concentrates exhaust exposure in the places where people live, work, and commute. The health and financial stakes of cleaning up jeepney emissions are not evenly distributed, and the solutions being proposed carry trade-offs that affect drivers, passengers, and regulators in very different ways.

Why jeepney emissions hit harder than other vehicles

Jeepneys are not the only polluters on the road. Clean Air Asia found that UV Express units contribute the most particulate matter and black carbon, while motorcycles emit large amounts of carbon monoxide and non-methane volatile organic compounds. Buses are the main source of sulfur dioxide. But jeepneys dominate the pollution profile because of their sheer numbers — at least 240,000 nationwide, with roughly 55,000 in Metro Manila — and their age profile. The combination of old engines, dense routes, and long operating hours makes them the single largest contributor to transport-related air pollution in urban areas.

What cleaner engines actually change

A 2025 study published in the ISPRS Archives simulated what would happen if all jeepneys in Trece Martires City switched to Euro-4 diesel engines. The results were striking: carbon monoxide levels dropped by 84.30 percent, nitrogen oxides by 21.76 percent, and PM2.5 by 83.36 percent. Those are the kinds of reductions that translate directly into fewer hospital visits for respiratory illness and lower mortality rates from heart disease and stroke, which the State of Global Air Report linked to air pollution as the second leading risk factor for early death globally in 2023.

But the same study also found that sulfur oxide levels would increase by 14.14 percent with full Euro-4 adoption. That is a reminder that no single technology solves everything — cleaner engines reduce some pollutants while leaving others unchanged or slightly worse. The net health benefit still favors the switch, but the trade-off matters for regulators setting air quality targets.

Geography also plays a role that technology alone cannot fix. Baguio sits on a plateau surrounded by higher peaks, with a cool climate that promotes thermal inversion — cooler air near the ground traps pollution instead of dispersing it. The city’s streets were designed for 20,000 vehicles; it now has 59,000 registered vehicles plus 28,000 passing through daily. Even with cleaner engines, the sheer volume of traffic in a constrained space limits how much air quality can improve.

Who pays for the transition — and who can’t

The Public Utility Vehicle Modernization Program (PUVMP) requires all jeepneys to be replaced with Euro-4 compliant or electric vehicles. A modern jeepney costs at least P2.8 million. An electric jeepney costs between P1.4 million and P1.8 million. The government’s financial incentive package — a 5 percent subsidy, a 6 percent interest rate loan payable over seven years, and an equity subsidy of P80,000 to P160,000 — covers roughly 5 percent of an e-jeepney’s total cost. In December 2023, the subsidy was raised to P280,000, still far short of what drivers need.

A jeepney driver’s average daily income ranges from P400 to P1,300. Taking out a loan for a vehicle that costs over a million pesos is not a realistic option for most drivers, especially those on shorter routes where daily earnings are lower. Transport groups petitioned the Supreme Court in December 2023 and April 2024 to issue a temporary restraining order against the PUVMP, arguing that it violates their right to gainful employment and forces them to surrender their vehicles and lose their livelihoods.

Drivers and operators have proposed an alternative: retrofitting existing jeepneys with cleaner Euro-6 engines instead of full replacement. Local manufacturer Sarao Motors stated that retrofitting could be more viable and is studying costs for transport authorities. But a 2017 Clean Air Asia study noted that Euro-4 technology is significantly more complicated to retrofit to existing units and may cause cost and operational issues. It remains unclear whether regulators will allow large-scale retrofitting modifications, and the Department of Transportation has stated it is worth studying swapping or retrofitting options without committing to either path.

The cost of doing nothing

In Baguio, 130 people died from air pollution-related causes in 2019 according to the State of Global Air Report, with scientists estimating the number could be as high as 191 — nearly four lives each week. Drivers face the highest risk. The Manila Observatory study tracked jeepney drivers in Quezon City and found their average PM2.5 exposure was twice that of the general public and seven times higher than the WHO annual guideline. Peak readings exceeded 90 μg/m³, falling under the country’s “emergency” category. The study also recorded elevated heart rates in drivers during morning rush hour and when PM2.5 concentrations were high, suggesting a direct physiological response to pollution exposure.

The limits of monitoring

The DENR-EMB Cordillera launched a continuous air quality monitoring station at Burnham Park in April 2025 — the region’s first official real-time sensor — with readings updated every 15 minutes. One year of data showed an average PM2.5 concentration of 14.41 μg/m³. The worst single day was New Year’s Day, with concentrations spiking to 73.23 μg/m³ due to firecracker use. Outside that peak, PM2.5 levels bordered or crossed into unhealthy territory during days leading to Holy Week and the December holidays, when tourist surges push vehicle numbers higher. Baguio’s air exceeded the WHO 24-hour exposure guideline of 15 μg/m³ two out of every five days between April 2025 and 2026. The city had already hit the WHO’s annual allowance in just the first week of monitoring.

Baguio recorded lower PM2.5 levels in 2023 than most Metro Manila cities, part of a years-long effort that included expanded roadside emissions inspections, tighter zoning rules, pedestrian-priority streets, and satellite parks. The city also signed a public-private partnership with Megawide Construction Corporation to build an integrated transport terminal aimed at reducing congestion. But air pollution levels in 2023 remained above 2010 peaks and lagged behind pre-pandemic averages, showing how difficult it is to reverse decades of accumulated emissions.

What drivers, passengers, and policymakers can actually do

For drivers: navigating the transition

Drivers who want to stay on the road under the PUVMP have three paths, each with different barriers. Joining a transport cooperative is a requirement under the program, but many drivers resist because it means surrendering individual control over their route and earnings. The EnTSUPERneur programme provides displaced transport workers with livelihood assistance, including starter kits worth P30,000 and skills training in areas like baking, carpentry, and dressmaking — but these are exit options, not pathways to continuing as a driver. Retrofitting remains a theoretical alternative, but until regulators clarify whether modified engines will be accepted, drivers cannot invest in it with confidence.

For passengers: understanding the health trade-offs

Passengers are exposed to elevated PM2.5 levels during their commute, but the exposure is shorter than what drivers face. The more immediate concern is proximity to idling vehicles at terminals and intersections. Choosing routes that minimize time spent waiting at major terminals, or walking a few blocks away from congested areas to board, can reduce exposure. These are marginal adjustments, not solutions — the structural issue is the concentration of old vehicles in dense urban corridors.

For policymakers: weighing speed against fairness

The Lancet study on the PUVMP argues that the Philippines could consider a longer energy transition period, given the country’s minimal contribution to overall greenhouse gas emissions and below-average GDP per capita. The same study notes that every ton of CO2 has a social cost of $185.10, and suggests that local and national governments use this calculation as a basis for monetary subsidy for every ton of expected CO2 reduction through the program. The question is whether the health benefits of faster adoption — fewer deaths from air pollution, lower rates of childhood asthma and adult cardiovascular disease — outweigh the financial strain on drivers who cannot afford the new vehicles. The answer depends on how much weight policymakers assign to immediate health outcomes versus long-term climate goals, and whether they can design subsidy mechanisms that actually reach the drivers who need them most.

Frequently asked questions about jeepney emissions and air pollution

The gap between what cleaner jeepneys could deliver and what drivers can afford is not just a funding problem — it is a design problem. The PUVMP sets a single standard and a single timeline, but the financial reality of drivers varies enormously by route, by city, and by whether they own or lease their vehicle. A program that works for a well-capitalized operator on a high-volume Metro Manila route may be impossible for a driver on a short provincial route earning P400 a day. The health data is clear: older jeepneys are making people sick, and drivers bear the brunt. But the transition will only succeed if the financial pathway matches the scale of the problem. If this was useful, you might also want to read how PM10 pollution affects Filipino health.

Sources

Agricultural runoff in the Philippines — Explores another major source of pollution affecting waterways and public health.

Using education to combat pollution — Covers community-based approaches to reducing environmental health risks.

Baguio jeepney drivers are paying the cost of bad air. Philippine Center for Investigative Journalism, 2026.

In Baguio, the air that draws crowds isn’t as clean as it seems. Philippine Center for Investigative Journalism, 2026.

Switching jeepneys to Euro-4 engines can significantly reduce air pollution and improve public health. University of the Philippines, 2025.

Public utility vehicle modernisation and just transition in the Philippines. The Lancet Planetary Health, 2024.