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The 2015-2019 Subaru Legacy marked the beginning of the model’s sixth generation, bringing significant improvements in design, technology, and safety features. Its sleek and modern exterior design incorporated Subaru’s signature hexagonal grille and bold character lines, giving it a more refined appearance. The spacious interior offered comfortable seating, high-quality materials, and user-friendly infotainment systems, making it a comfortable and practical choice for families and commuters. Safety was a paramount focus, with Subaru’s EyeSight Driver Assist Technology available as an option, which included features like adaptive cruise control and pre-collision braking. The standard symmetrical all-wheel drive provided excellent traction in various conditions, while the Legacy’s smooth ride and precise handling added to its overall appeal. With a choice of efficient four-cylinder and more potent six-cylinder engines, the 2015-2019 Subaru Legacy continued to offer versatility and reliability in the midsize sedan segment, making it a solid choice for those seeking a well-rounded and safe family vehicle.



Subaru Legacy specification, engine oil capacity, spark plug gap, safety rating, fuel consumption, transmission, and light bulb sizes.


  • Type: 4th gen
    • BN
    • BS

Engine 2.5L 4-Cylinder DOHC

  • Recommended Oil viscosity: 0W-20
  • Recommended Engine Oil: API
  • Oil capacity: 5.1 qt

Spark Plug Gap

  • 2.5L 4-Cylinder: 0.044”

Engine 3.6L 6-Cylinder DOHC

  • Recommended Oil viscosity: 5W-30
  • Recommended Engine Oil: API
  • Oil capacity: 6.9 qt

Spark Plug Gap

  • 3.6L 4-Cylinder: 0.044”


  • Capacity: 18.5 US gal (70 liters, 15.4 Imp gal)

Front differential gear oil

  • Type: 
    • SUBARU Extra MT
    • API classification GL-5 (75W-90)
  • Capacity: 
    • 2.5 L models: 1.3 US qt (1.2 liters, 1.1 Imp qt)
    • 3.6 L models: 1.5 US qt (1.4 liters, 1.2 Imp qt)

Rear differential gear oil

  • Capacity: 0.8 US qt (0.8 liters, 0.7 Imp qt)

Continuously variable transmission fluid

  • Capacity: 
    • 2.5 L models Legacy: 11.9 US qt (11.3 liters, 9.9 Imp qt)
    • Outback: 12.4 US qt (11.7 liters, 10.3 Imp qt)

Rear differential gear oil

  • Type: API classification GL-5
  • Capacity: 0.8 US qt (0.8 liter, 0.7 Imp qt)

Brake fluid

  • Type: FMVSS No. 116, DOT 3 or DOT 4 brake fluid

Engine coolant

  • Type: SUBARU Super Coolant
  • Capacity: 
    • 2.5 L models  8.2 US qt (7.8 liters, 6.9 Imp qt)
    • 3.6 L models: 7.4 US qt (7.0 liters, 6.2 Imp qt)



  • 2.5 L SOHC i-AVLS 170 hp (130 kW) H4 EJ25 (South Africa, Outback)
  • 2.5 L DOHC DAVCS 170 hp (130 kW) H4 FB25
  • 3.6 L DOHC DAVCS 256 hp (191 kW) H6 EZ36
  • 2.0 L DOHC turbodiesel 148 hp (110 kW) H4 EE20


  • 8-speed Lineartronic CVT
  • 6-speed manual

Fuel Consumption


Safety Ratings



Front Lights

  • Daytime Running Light Bulb: LED
  • Front Fog Light Bulb: LED
  • Front Sidemarker Light Bulb: LED
  • Front Turn Signal Light Bulb: 7444NA
  • High Beam Headlight Bulb:
    • 9005
    • LED
  • Low Beam Headlight Bulb:
    • H11-55W
    •  LED

Rear Lights

  • Back Up Light Bulb: 921
  • Brake Light Bulb: LED
  • Center High Mount Stop Light Bulb: LED
  • License Plate Light Bulb: 168
  • Parking Light Bulb: LED
  • Rear Sidemarker Light Bulb: 168
  • Rear Turn Signal Light Bulb: 7440NA
  • Tail Light Bulb: LED

Interior Lights

  • Dome Light Bulb: DE3175
  • Interior Door Light Bulb: 168
  • Map Light Bulb: DE3175
  • Trunk Light Bulb: 194