
With fuel prices in the Philippines on the rise, Filipino motorists are increasingly looking for the most fuel-efficient vehicles available. One of the most popular options is diesel fuel, which is cheaper than gasoline and offers better fuel economy. In this article, we will discuss the best diesel fuel options in the Philippines, including brands such as Petron Turbo Diesel, Sea Oil, and Uni Oil, and their benefits in terms of performance, fuel efficiency, and cost-effectiveness. We will also explore the results of field tests conducted on different diesel vehicles and the factors that make diesel engines a popular choice in the country.
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What You'll Learn

The pros and cons of diesel vs gasoline in the Philippines
Diesel engines are generally more fuel-efficient than gasoline engines, with diesel fuel being cheaper by almost 25% in the Philippines. Diesel engines also have a longer lifespan than gasoline engines, with the former lasting for up to 1,609,000 km, while the latter only lasts for 322,000 km on average. Diesel engines have higher torque numbers, making it easier to accelerate from a full stop and go uphill smoothly. The maintenance cost of diesel engines is relatively cheaper as they have fewer parts.
However, diesel engines are known for their noisy operation and shaky or wobbly cabins due to their high-pressure operation. They are also more expensive to repair in the event of an accident or significant damage. While diesel engines used to be known for their harmful carbon emissions, advancements in engine technologies and the transition to ultra-low sulfur diesel have made them as eco-friendly as gasoline engines.
On the other hand, gasoline engines offer better ride comfort and a quieter cabin. They are also generally cheaper to repair than diesel engines. However, they have a shorter lifespan and are less fuel-efficient, resulting in higher fuel costs over time.
If you plan to spend a lot of time on highways and cover many kilometers, a diesel engine would be more suitable due to its fuel efficiency. However, if you primarily use your vehicle for city driving, short errands, and navigating through heavy traffic, a gasoline engine would be a better choice as it provides better comfort and is more suited to stop-and-go driving.
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The most fuel-efficient diesel cars in the Philippines
With fuel prices in the Philippines on the rise, Filipino motorists are increasingly looking for vehicles with good fuel economy. While hybrid and electric vehicles are an option, diesel engines offer impressive fuel economy and great torque.
Isuzu MU-X
The Isuzu MU-X is an SUV that can achieve around 15km/L on the highway and an estimated 10km/L or more in the city. It has a large 80-litre fuel tank, meaning fewer trips to the gas station.
Mitsubishi Strada
The Mitsubishi Strada is a pickup truck with excellent fuel efficiency. Powered by a 2.4-litre turbo-diesel engine, it can achieve 7.0km/L in heavy city traffic and up to 17.9km/L on the highway.
Ford Ranger
The Ford Ranger is a midsize pickup truck with a 2.0-litre Biturbo diesel engine and a 10-speed automatic gearbox. It can achieve 9 km/L in the city and about 15 km/L on the highway.
Nissan Terra
The Nissan Terra is an SUV known for its comfortable ride. It can achieve 10 km/L in city traffic and averages about 15 km/L on the highway.
Peugeot 3008
The Peugeot 3008 is a surprisingly fuel-efficient vehicle with a 2.0-litre BlueHDi diesel engine. It can achieve 25.8 kilometres for every litre of gasoline.
BMW X1
The BMW X1 is a premium vehicle with a 2.0 TwinPower turbo-diesel engine. It offers excellent fuel efficiency, cranking out 23 kilometres per litre of diesel.
Other notable mentions include the Maxus T60 pickup truck, the Hyundai Accent, and the Kia Sportage, Soul, and Soul.
It is worth noting that while diesel engines offer good fuel economy and are cheaper to run, they are typically noisier and more expensive to repair than gasoline engines.
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The top petroleum brands in the Philippines
The Philippine fuel market is dominated by three major companies, which collectively represent about half of the market. These companies are Petron Corporation, Pilipinas Shell, and Chevron Philippines, collectively referred to as the "Big Three".
Petron Corporation, the leading fuel and oil company in the Philippines, has a market share of about 27% as of 2018. The company operates the only remaining oil refinery in Bataan and can supply about 40% of the country's total fuel requirements.
Shell Pilipinas Corporation, the second-largest of the "Big Three", operates in the downstream oil and gas segment, refining and marketing petroleum products. Since 2020, however, Shell Pilipinas has relied solely on imports after closing its refinery.
Chevron Philippines, formerly Caltex, is the third-largest oil company in the Philippines. The company focuses on imports after halting its refining operations.
Outside of the "Big Three", other notable players in the Philippine fuel market include Phoenix Petroleum, Seaoil, and UniOil. Phoenix Petroleum, the fifth-biggest fuel and oil company in the Philippines, has a market share of 6.91% as of 2018 and has more than 650 service stations nationwide. Seaoil Philippines, Inc., another prominent company, has a market share of 4.69% as of 2018 and consists of over 300 service stations across the country.
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Alternative fuel brands in the Philippines
The Philippine fuel and oil market is a multi-billion dollar industry that has traditionally been dominated by the "Big 3" oil companies: Petron Corporation, Pilipinas Shell, and Chevron Philippines. However, in recent years, alternative fuel brands have been stepping up and providing motorists with more options.
One of the more popular alternative brands is Sea Oil, which offers top-of-the-line octane ratings and is partnered with STP additives to keep your motor clean. They offer a range of fuels, including Extreme 97, Extreme U, Extreme 95 gasoline, and Exceed Diesel.
Another option is Phoenix, which has its own fuel vouchers and phone application discounts. They also have promotions and discount cards that can give you access to discounts of up to PHP 2.50 per liter on select fuels.
Unioil is another alternative brand that offers similar quality fuels to the bigger gasoline companies. Their facilities are clean and well-lit, and they offer substantial discounts of around PHP 3 to PHP 5 per liter with an S&R membership card.
Other global petroleum brands like Total are also staking their claim in the Philippines, offering clean facilities and servicing centers.
It's important to note that all fuels sold in the Philippines adhere to certain standards, so even alternative brands can be trusted as long as the fuel specification is right for your vehicle.
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The best diesel for older diesel engines
When it comes to choosing the best diesel for older diesel engines in the Philippines, there are several factors to consider. Firstly, diesel engines are generally more fuel-efficient than gasoline engines, offering better mileage and lower fuel consumption. This makes them a more budget-friendly option, especially with diesel fuel being cheaper than gasoline in the Philippines. Diesel engines also tend to have a longer lifespan than gasoline engines due to their durable design and heavy-duty components.
However, one of the main considerations when choosing diesel for older engines is the ignition quality of the fuel. The ignition quality of diesel fuel is indicated by its cetane number (CN). Higher cetane numbers indicate easier ignition, which results in better engine performance and lower emissions. For older diesel engines, it is generally recommended to use diesel fuel with a higher cetane number to ensure smoother operation and improved fuel efficiency.
One popular option for diesel fuel in the Philippines is Seaoil BioXceed Diesel, which has been reported to perform well without any issues. Another recommended brand is Petron, which offers premium fuels formulated for Philippine driving conditions. Their Petron Turbo Diesel fuel has been praised for its excellent fuel consumption and power delivery, making it a good choice for older diesel engines.
When selecting diesel fuel for older engines, it is also essential to consider the recommended octane rating for your vehicle. Older cars typically match better with lower octane rating gas, so be sure to refer to your vehicle owner's manual for the specified octane grade. Additionally, the quality of the fuel additives can impact the performance of your engine. Branded fuels tend to have more additives that help prevent clogs, reduce residues, and improve engine longevity.
In summary, when choosing the best diesel for older diesel engines in the Philippines, opt for fuels with higher cetane numbers, consider popular brands like Petron and Seaoil, match the recommended octane rating for your vehicle, and choose branded fuels with quality additives to ensure optimal engine performance and longevity.
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Frequently asked questions
The best diesel fuel in the Philippines is Petron Turbo Diesel, which has been rated as delivering the best performance in terms of power, engine response, and acceleration.
Diesel fuel is generally cheaper than gasoline fuel in the Philippines. Alternative fuel brands in the country will likely have lower prices compared to mainstream brands. For example, Uni Oil offers substantial discounts with an S&R membership.
Diesel engines are generally more fuel-efficient than gasoline engines, with up to 20% less fuel consumption. They also have a longer lifespan, producing higher torque numbers, and are now as eco-friendly as gasoline engines.
The Isuzu MU-X, Mitsubishi Strada, and Mitsubishi Montero Sport are some of the most fuel-efficient diesel cars in the Philippines.











































