Engine Daewoo A15SMS

The 1.5-liter 8-valve Daewoo A15SMS engine was produced by the company from 1997 to 2016 and was installed on the popular Lanos, Nexia, and Chevrolet Aveo models under the F15S3 index. This power unit is essentially a modernized version of the famous G15MF motor.

The MS series also includes: A16DMS.

In 1997, the assembly of E-TEC gasoline engines began at the Korean factory GM-Daewoo, which was another modification of the GM Family 1 series engines for EURO 3 environmental standards. One of the representatives of this line was a 1.5-liter power unit with the A15SMS index. This is the most common engine with distributed fuel injection, a cast-iron cylinder block, an aluminum 8-valve cylinder head with hydraulic lifters, and a timing belt drive.


Production years 1997-2016
Displacement, cc 1498
Fuel system distributed injection
Power output, hp 80 – 86
Torque output, Nm 123 – 130
Cylinder block cast iron R4
Block head aluminum 8v
Cylinder bore, mm 76.5
Piston stroke, mm 81.5
Compression ratio 9.5
Features no
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 3.75
Fuel type petrol
Euro standards EURO 3
Fuel consumption, L/100 km (for Daewoo Lanos 2002)
— city
— highway
— combined
Engine lifespan, km ~300 000
Weight, kg 117

The engine was installed on:

  • Daewoo Lanos 1 (T100) in 1997 – 2002;
  • Daewoo Lanos T150 in 2000 – 2008;
  • Daewoo Nexia N150 in 2008 – 2016.

Disadvantages of the Daewoo A15SMS engine

  • Inexpensive Daewoo and Chevrolet models are often equipped with not very reliable radiators, which usually leak by 50,000 km, and this cylinder head cannot withstand serious overheating.
  • This engine is prone to lubrication leaks and often it oozes out from under the valve cover and falls directly on the timing belt, and when it breaks, in most cases, the valves bend.
  • Unreliable attachments deliver quite a lot of problems to the owners, and most often the starter fails in this unit, the thermostat wedges and the water pump leaks.
  • Hydraulic compensators here do not tolerate low-quality oil and can knock even up to 50,000 km, the engine compartment wiring harness is often frayed, and the sensors are not reliable. At high mileage, an oil burner often appears due to wear on the valve stem seals.

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