Top Straight 6 BHP/L

Highest Straight Six Engined BHP / Litre Cars

Top 20

The Highest Power / Litre Straight Six Engined Cars Ever

The Highest Power / Litre Straight Six Engined Cars Ever

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These cars have the highest specific output (BHP per Litre) of any Straight Six engined production cars ever.

  1. 2023 BMW 3.0 CSL (G82)

    Specific Output: 3.02 hp/in3

    1st
    (2023)
    ...3.0 CSL
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    3 L Inline 6 Bi-Turbo
    
    187 mph
    
    3.6 seconds
    
    552 hp
    
    21.4 mpg
    
    2 Doors
    
    2 Seats
    
    15.5 ft3
    lb
    3,580 lbs
    Front - RWD
    All Specs

    With a specific output of 3.02 hp/in3, the BMW 3.0 CSL takes first place.
    It's a 2 door RWD Coupé with 2 seats and was sold during 2023.
    It is also 1st in The Highest Power / Cubic Capacity BMW Cars Ever.

  2. 2022 BMW M4 CSL (G82)

    Specific Output: 2.97 hp/in3

    2nd
    (2022 - 2024)
    ...M4 CSL
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    3 L Inline 6 Bi-Turbo
    
    191 mph
    
    3.7 seconds
    
    542 hp
    
    24 mpg
    
    2 Doors
    
    2 Seats
    
    15.5 ft3
    lb
    3,583 lbs
    Front - RWD
    All Specs

    With a specific output of 2.97 hp/in3, the BMW M4 CSL takes joint second place.
    It's a 2 door RWD Coupé with 2 seats and was sold from 2022 to 2024.
    It is also 1st in The Fastest BMW Cars Ever.

  3. 2024 BMW M4 CS (G82)

    Specific Output: 2.97 hp/in3

    3rd
    (2024 - present)
    ...M4 CS
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    3 L Inline 6 Bi-Turbo
    
    188 mph
    
    3.4 seconds
    
    542 hp
    
    23.1 mpg
    
    2 Doors
    
    4 Seats
    
    15.5 ft3
    lb
    3,880 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.97 hp/in3, the BMW M4 CS takes joint second place.
    It's a 2 door 4WD Coupé with 4 seats, with deliveries starting in 2024.
    It is also joint 2nd in The Highest Power / Cubic Capacity BMW Cars Ever.

  4. 2023 BMW M3 CS (G80)

    Specific Output: 2.97 hp/in3

    4th
    (2023 - 2024)
    ...M3 CS
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    3 L Inline 6 Bi-Turbo
    
    188 mph
    
    3.4 seconds
    
    542 hp
    
    23.3 mpg
    
    4 Doors
    
    5 Seats
    
    17 ft3
    lb
    3,891 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.97 hp/in3, the BMW M3 CS takes joint second place.
    It's a 4 door 4WD Sedan with 5 seats and was sold from 2023 to 2024.
    It is also joint 2nd in The Highest Power / Cubic Capacity BMW Cars Ever.

  5. 2025 BMW M3 CS Touring (G81)

    Specific Output: 2.97 hp/in3

    5th
    (2025 - present)
    ...S Touring
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    3 L Inline 6 Bi-Turbo
    
    186 mph
    
    3.5 seconds
    
    542 hp
    
    22.4 mpg
    
    5 Doors
    
    5 Seats
    
    17.7-53.3 ft3
    lb
    4,079 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.97 hp/in3, the BMW M3 CS Touring takes joint second place.
    It's a 5 door 4WD Wagon with 5 seats, with deliveries starting in 2025.
    It is also joint 3rd in Cars With The Most Powerful Straight 6 Engines.

  6. 2025 BMW M2 CS (G87)

    Specific Output: 2.87 hp/in3

    6th
    (2025 - present)
    ...M2 CS
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    3 L Inline 6 Bi-Turbo
    
    188 mph
    
    3.8 seconds
    
    523 hp
    
    23.5 mpg
    
    2 Doors
    
    4 Seats
    
    13.8 ft3
    lb
    3,748 lbs
    Front - RWD
    All Specs

    With a specific output of 2.87 hp/in3, the BMW M2 CS takes joint sixth place.
    It's a 2 door RWD Coupé with 4 seats, with deliveries starting in 2025.
    It is also joint 6th in The Highest Power / Cubic Capacity BMW Cars Ever.

  7. 2024 BMW M4 Competition Coupé xDrive (G82)

    Specific Output: 2.87 hp/in3

    7th
    (2024 - present)
    ...é xDrive
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.5 seconds
    
    523 hp
    
    23.5 mpg
    
    2 Doors
    
    4 Seats
    
    15.5 ft3
    lb
    3,913 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.87 hp/in3, the BMW M4 Competition Coupé xDrive takes joint sixth place.
    It's a 2 door 4WD Coupé with 4 seats, with deliveries starting in 2024.
    It is also joint 6th in The Highest Power / Cubic Capacity BMW Cars Ever.

  8. 2024 BMW M3 Competition xDrive (G80)

    Specific Output: 2.87 hp/in3

    8th
    (2024 - present)
    ...on xDrive
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.5 seconds
    
    523 hp
    
    23.3 mpg
    
    4 Doors
    
    5 Seats
    
    17 ft3
    lb
    3,924 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.87 hp/in3, the BMW M3 Competition xDrive takes joint sixth place.
    It's a 4 door 4WD Sedan with 5 seats, with deliveries starting in 2024.
    It is also joint 6th in The Highest Power / Cubic Capacity BMW Cars Ever.

  9. 2024 BMW M3 Competition Touring xDrive (G81)

    Specific Output: 2.87 hp/in3

    9th
    (2024 - present)
    ...ng xDrive
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.6 seconds
    
    523 hp
    
    22.8 mpg
    
    5 Doors
    
    5 Seats
    
    17.7-53.3 ft3
    lb
    4,112 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.87 hp/in3, the BMW M3 Competition Touring xDrive takes joint sixth place.
    It's a 5 door 4WD Wagon with 5 seats, with deliveries starting in 2024.
    It is also joint 6th in The Highest Power / Cubic Capacity BMW Cars Ever.

  10. 2024 BMW M4 Competition Convertible xDrive (G83)

    Specific Output: 2.87 hp/in3

    10th
    (2024 - present)
    ...le xDrive
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    3 L Inline 6 Bi-Turbo Gas
    
    155 mph
    
    3.7 seconds
    
    523 hp
    
    23.1 mpg
    
    2 Doors
    
    4 Seats
    
    13.6 ft3
    lb
    4,244 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.87 hp/in3, the BMW M4 Competition Convertible xDrive takes joint sixth place.
    It's a 2 door 4WD Convertible with 4 seats, with deliveries starting in 2024.
    It is also joint 6th in The Highest Power / Cubic Capacity BMW Cars Ever.

  11. 2024 Alpina B3 GT AWD (G20)

    Specific Output: 2.85 hp/in3

    11th
    (2024 - present)
    ...B3 GT AWD
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    3 L Inline 6 Bi-Turbo
    
    191 mph
    
    3.4 seconds
    
    522 hp
    
    22.1 mpg
    
    4 Doors
    
    5 Seats
    
    17 ft3
    lb
    3,968 lbs
    Front - AWD
    All Specs

    With a specific output of 2.85 hp/in3, the Alpina B3 GT AWD takes joint eleventh place.
    It's a 4 door AWD Sedan with 5 seats, with deliveries starting in 2024.
    It is also joint 1st in The Highest Power / Cubic Capacity Alpina Cars Ever.

  12. 2024 Alpina B3 GT Touring AWD (G21)

    Specific Output: 2.85 hp/in3

    12th
    (2024 - present)
    ...uring AWD
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    3 L Inline 6 Bi-Turbo
    
    190 mph
    
    3.5 seconds
    
    522 hp
    
    22.1 mpg
    
    4 Doors
    
    5 Seats
    
    17.7-53.3 ft3
    lb
    4,123 lbs
    Front - AWD
    All Specs

    With a specific output of 2.85 hp/in3, the Alpina B3 GT Touring AWD takes joint eleventh place.
    It's a 4 door AWD Wagon with 5 seats, with deliveries starting in 2024.
    It is also joint 1st in The Highest Power / Cubic Capacity Alpina Cars Ever.

  13. 2025 Alpina B4 GT Gran Coupé (G24)

    Specific Output: 2.85 hp/in3

    13th
    (2025 - present)
    ...an Coupé
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    3 L Inline 6 Bi-Turbo
    
    190 mph
    
    3.5 seconds
    
    522 hp
    
    22.1 mpg
    
    4 Doors
    
    5 Seats
    
    16.6-45.6 ft3
    lb
    4,167 lbs
    Front - AWD
    All Specs

    With a specific output of 2.85 hp/in3, the Alpina B4 GT Gran Coupé takes joint eleventh place.
    It's a 4 door AWD Coupé with 5 seats, with deliveries starting in 2025.
    It is also joint 1st in The Highest Power / Cubic Capacity Alpina Cars Ever.

  14. 2021 BMW M4 Competition Coupé (G82)

    Specific Output: 2.75 hp/in3

    14th
    (2021 - 2024)
    ...on Coupé
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.9 seconds
    
    503 hp
    
    23.1 mpg
    
    2 Doors
    
    4 Seats
    
    15.5 ft3
    lb
    3,803 lbs
    Front - RWD
    All Specs

    With a specific output of 2.75 hp/in3, the BMW M4 Competition Coupé takes joint fourteenth place.
    It's a 2 door RWD Coupé with 4 seats and was sold from 2021 to 2024.
    It is also joint 11th in The Highest Power / Cubic Capacity BMW Cars Ever.

  15. 2024 BMW M4 Competition Coupé (G82)

    Specific Output: 2.75 hp/in3

    15th
    (2024 - present)
    ...on Coupé
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.9 seconds
    
    503 hp
    
    24.2 mpg
    
    2 Doors
    
    4 Seats
    
    15.5 ft3
    lb
    3,803 lbs
    Front - RWD
    All Specs

    With a specific output of 2.75 hp/in3, the BMW M4 Competition Coupé takes joint fourteenth place.
    It's a 2 door RWD Coupé with 4 seats, with deliveries starting in 2024.
    It is also joint 11th in The Highest Power / Cubic Capacity BMW Cars Ever.

  16. 2021 BMW M3 Competition (G80)

    Specific Output: 2.75 hp/in3

    16th
    (2021 - 2024)
    ...mpetition
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.9 seconds
    
    503 hp
    
    23.1 mpg
    
    4 Doors
    
    5 Seats
    
    17 ft3
    lb
    3,814 lbs
    Front - RWD
    All Specs

    With a specific output of 2.75 hp/in3, the BMW M3 Competition takes joint fourteenth place.
    It's a 4 door RWD Sedan with 5 seats and was sold from 2021 to 2024.
    It is also joint 11th in The Highest Power / Cubic Capacity BMW Cars Ever.

  17. 2024 BMW M3 Competition (G80)

    Specific Output: 2.75 hp/in3

    17th
    (2024 - present)
    ...mpetition
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.9 seconds
    
    503 hp
    
    24.2 mpg
    
    4 Doors
    
    5 Seats
    
    17 ft3
    lb
    3,814 lbs
    Front - RWD
    All Specs

    With a specific output of 2.75 hp/in3, the BMW M3 Competition takes joint fourteenth place.
    It's a 4 door RWD Sedan with 5 seats, with deliveries starting in 2024.
    It is also joint 11th in The Highest Power / Cubic Capacity BMW Cars Ever.

  18. 2021 BMW M3 Competition xDrive (G80)

    Specific Output: 2.75 hp/in3

    18th
    (2021 - 2024)
    ...on xDrive
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.5 seconds
    
    503 hp
    
    23.3 mpg
    
    4 Doors
    
    5 Seats
    
    17 ft3
    lb
    3,924 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.75 hp/in3, the BMW M3 Competition xDrive takes joint fourteenth place.
    It's a 4 door 4WD Sedan with 5 seats and was sold from 2021 to 2024.
    It is also joint 11th in The Highest Power / Cubic Capacity BMW Cars Ever.

  19. 2021 BMW M4 Competition Coupé xDrive (G82)

    Specific Output: 2.75 hp/in3

    19th
    (2021 - 2024)
    ...é xDrive
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.5 seconds
    
    503 hp
    
    23.3 mpg
    
    2 Doors
    
    4 Seats
    
    15.5 ft3
    lb
    3,913 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.75 hp/in3, the BMW M4 Competition Coupé xDrive takes joint fourteenth place.
    It's a 2 door 4WD Coupé with 4 seats and was sold from 2021 to 2024.
    It is also joint 11th in The Highest Power / Cubic Capacity BMW Cars Ever.

  20. 2022 BMW M3 Competition Touring xDrive (G81)

    Specific Output: 2.75 hp/in3

    20th
    (2022 - 2024)
    ...ng xDrive
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    3 L Inline 6 Bi-Turbo
    
    155 mph
    
    3.6 seconds
    
    503 hp
    
    23.3 mpg
    
    5 Doors
    
    5 Seats
    
    17.7-53.3 ft3
    lb
    4,112 lbs
    Front - 4WD
    All Specs

    With a specific output of 2.75 hp/in3, the BMW M3 Competition Touring xDrive takes joint fourteenth place.
    It's a 5 door 4WD Wagon with 5 seats and was sold from 2022 to 2024.
    It is also joint 11th in The Highest Power / Cubic Capacity BMW Cars Ever.

Other Car Rankings

Top BHP/L 22.3K totalTop N/A BHP/L 10.6K totalTop Inline 4 BHP/L 13.9K totalTop N/A Inline 4 BHP/L 6.2K totalTop Inline 5 BHP/L 550+ totalTop N/A Straight 6 BHP/L 750+ totalTop V6 BHP/L 2.1K totalTop N/A V6 BHP/L 1.2K totalTop V8 BHP/L 1.9K totalTop N/A V8 BHP/L 1.1K total
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