I. Imports: Diesel Engines, Other Types of ICEs and Generator Sets Saw Growth; All Others Declined with a Sharp Drop in Gasoline Engines

1. Imports of diesel engines reached 1.800 billion US dollars, a year-on-year increase of 17.55%. (Among them: marine diesel engines and vehicle diesel engines with P≥132.39kw saw a year-on-year increase of over 22%; all other diesel engines declined year-on-year)

2. Imports of gasoline engines stood at 346.85 million US dollars, a year-on-year decrease of 31.34%. (Gasoline engines with a displacement of 50ml < V ≤ 3000ml declined by less than 30%; those with other displacements dropped by over 70%)

3. Imports of other complete ICE units were 2.37475 billion US dollars, a year-on-year increase of 9.71%. (All subcategories saw growth except biogas engines; marine other spark-ignition reciprocating or rotary piston ICEs, other unspecified spark-ignition piston ICEs, and other compression-ignition piston ICEs with an output power of ≤14kw registered a year-on-year increase of over 25%)

4. Imports of ICE parts and components reached 4.98419 billion US dollars, a year-on-year decrease of 2.47%. (Catalytic converters or particulate filters for purifying or filtering exhaust gases from ICEs (whether combined or not) and crankshafts for marine diesel engines saw a year-on-year increase of over 25%; electronic control fuel injection devices and coolant pumps for piston ICEs dropped by over 20% year-on-year)

5. Imports of generator sets were 903.85 million US dollars, a year-on-year increase of 10.14%. (Compression-ignition ICE generator sets with P≤75KVA and 375KVA < P ≤2MVA grew by over 30% year-on-year; all others declined year-on-year)

II. Exports: Diesel Engines and Gasoline Engines Declined; All Other Subcategories Achieved Growth

1. Exports of diesel engines reached 1.32845 billion US dollars, a year-on-year decrease of 0.93%. (Marine diesel engines rose by 20.84% year-on-year; vehicle diesel engines with P≥132.39kw increased by 5.12% year-on-year; all other diesel engines declined year-on-year)

2. Exports of gasoline engines stood at 2.07389 billion US dollars, a year-on-year decrease of 1.57%. (Gasoline engines with a displacement of 50ml < V ≤250ml grew by 23.86% year-on-year; reciprocating piston engines for vehicles with a displacement of ＞3000ml increased by 17.30% year-on-year; those with other displacements declined year-on-year)

3. Exports of other complete ICE units were 3.44208 billion US dollars, a year-on-year increase of 28.50%. (All subcategories saw growth except biogas engines; marine other spark-ignition reciprocating or rotary piston ICEs surged by 149.35% year-on-year; other compression-ignition piston ICEs with an output power of ≥14kw registered a year-on-year increase of over 32%)

4. Exports of ICE parts and components reached 14.76737 billion US dollars, a year-on-year increase of 5.00%. (Parts for locomotive diesel engines, parts for diesel engines with P≥132.39kw (180hp), and engine superchargers (excluding turbochargers) grew by over 10% year-on-year; crankshafts for marine diesel engines and electronic control fuel injection devices increased by nearly 30% year-on-year)

5. Exports of generator sets were 6.72022 billion US dollars, a year-on-year increase of 23.91%. (All subcategories achieved growth; compression-ignition ICE generator sets, especially those with P＞75KVA, saw a year-on-year increase of over 24%)

Summary of Imports and Exports of National ICE Products from January to December 2025