Highest BHP / Litre N/A Straight Six Engined Cars

1. 2003 BMW M3 Coupé CSL (E46)

   Specific Output: 1.79 hp/in³

   1^st
   

   (2003 - 2004)

   ...oupé CSL
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   3.2 L Inline 6

   

   155 mph

   

   4.9 seconds

   

   355 hp

   

   19.7 mpg

   

   2 Doors

   

   4 Seats

   

   14.5 ft³

   

   3,053 lbs

   Front - RWD

   All Specs

   With a specific output of 1.79 hp/in³, the BMW M3 Coupé CSL takes first place.
   It's a 2 door RWD Coupé with 4 seats and was sold from 2003 to 2004.
   It is also joint 5th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

3. 2005 TVR T440 R

   Specific Output: 1.7 hp/in³

   2^nd
   

   (2005 - 2006)

   ...T440 R
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   4.2 L Inline 6

   

   199 mph

   

   3.7 seconds

   

   434 hp

   

   13.3 mpg

   

   2 Doors

   

   2 Seats

   

   9.7 ft³

   

   2,679 lbs

   Front - RWD

   All Specs

   With a specific output of 1.7 hp/in³, the TVR T440 R takes joint second place.
   It's a 2 door RWD Coupé with 2 seats and was sold from 2005 to 2006.
   It is also joint 1st in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

5. 2003 TVR T440 R

   Specific Output: 1.7 hp/in³

   3^rd
   

   (2003 - 2004)

   ...T440 R
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   4.2 L Inline 6

   

   211 mph

   

   3.7 seconds

   

   434 hp

   

   13.3 mpg

   

   2 Doors

   

   2 Seats

   

   9.7 ft³

   

   2,833 lbs

   Front - RWD

   All Specs

   With a specific output of 1.7 hp/in³, the TVR T440 R takes joint second place.
   It's a 2 door RWD Coupé with 2 seats and was sold from 2003 to 2004.
   It is also joint 1st in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

7. 2006 Wiesmann Roadster MF3

   Specific Output: 1.7 hp/in³

   4^th
   

   (2006 - 2010)

   ...dster MF3
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   3.2 L Inline 6

   

   158 mph

   

   4.9 seconds

   

   338 hp

   

   19.4 mpg

   

   2 Doors

   

   2 Seats

   

   8.1 ft³

   

   2,601 lbs

   Front Mid - RWD

   All Specs

   With a specific output of 1.7 hp/in³, the Wiesmann Roadster MF3 takes joint second place.
   It's a 2 door RWD Roadster with 2 seats and was sold from 2006 to 2010.
   It is also 6th in The Best MPG Wiesmann Cars Ever.

9. 2006 BMW Z4 M Roadster (E85)

   Specific Output: 1.7 hp/in³

   5^th
   

   (2006 - 2008)

   ...Roadster
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   3.2 L Inline 6

   

   155 mph

   

   5.0 seconds

   

   338 hp

   

   19.4 mpg

   

   2 Doors

   

   2 Seats

   

   7.8 ft³

   

   3,274 lbs

   Front - RWD

   All Specs

   With a specific output of 1.7 hp/in³, the BMW Z4 M Roadster takes joint second place.
   It's a 2 door RWD Roadster with 2 seats and was sold from 2006 to 2008.
   It is also joint 13th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

11. 2006 BMW Z4 M Coupé (E86)

    Specific Output: 1.7 hp/in³

    6^th
    

    (2006 - 2008)

    ...M Coupé
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    3.2 L Inline 6

    

    155 mph

    

    5.0 seconds

    

    338 hp

    

    19.4 mpg

    

    2 Doors

    

    2 Seats

    

    8.7 ft³

    

    3,296 lbs

    Front - RWD

    All Specs

    With a specific output of 1.7 hp/in³, the BMW Z4 M Coupé takes joint second place.
    It's a 2 door RWD Coupé with 2 seats and was sold from 2006 to 2008.
    It is also joint 13th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

13. 2001 BMW M3 Coupé (E46)

    Specific Output: 1.7 hp/in³

    7^th
    

    (2001 - 2006)

    ...M3 Coupé
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    3.2 L Inline 6

    

    155 mph

    

    5.2 seconds

    

    338 hp

    

    17.6 mpg

    

    2 Doors

    

    5 Seats

    

    14.5 ft³

    

    3,461 lbs

    Front - RWD

    All Specs

    With a specific output of 1.7 hp/in³, the BMW M3 Coupé takes joint second place.
    It's a 2 door RWD Coupé with 5 seats and was sold from 2001 to 2006.
    It is also joint 13th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

15. 2001 BMW M3 Cabrio (E46)

    Specific Output: 1.7 hp/in³

    8^th
    

    (2001 - 2006)

    ...M3 Cabrio
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    3.2 L Inline 6

    

    155 mph

    

    5.5 seconds

    

    338 hp

    

    17.3 mpg

    

    2 Doors

    

    4 Seats

    

    10.6 ft³

    

    3,814 lbs

    Front - RWD

    All Specs

    With a specific output of 1.7 hp/in³, the BMW M3 Cabrio takes joint second place.
    It's a 2 door RWD Convertible with 4 seats and was sold from 2001 to 2006.
    It is also joint 13th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

17. 2005 TVR Sagaris

    Specific Output: 1.62 hp/in³

    9^th
    

    (2005 - 2006)

    ...Sagaris
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    4 L Inline 6

    

    186 mph

    

    3.9 seconds

    

    395 hp

    

    18.1 mpg

    

    2 Doors

    

    2 Seats

    

    13.1 ft³

    

    2,377 lbs

    Front Mid - RWD

    All Specs

    With a specific output of 1.62 hp/in³, the TVR Sagaris takes joint ninth place.
    It's a 2 door RWD Coupé with 2 seats and was sold from 2005 to 2006.
    It is also joint 3rd in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

19. 2005 TVR Tuscan Roadster S

    Specific Output: 1.62 hp/in³

    10^th
    

    (2005 - 2006)

    ...oadster S
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    4 L Inline 6

    

    193 mph

    

    3.8 seconds

    

    395 hp

    

    14.7 mpg

    

    2 Doors

    

    2 Seats

    

    9.7 ft³

    

    2,535 lbs

    Front - RWD

    All Specs

    With a specific output of 1.62 hp/in³, the TVR Tuscan Roadster S takes joint ninth place.
    It's a 2 door RWD Targa Top with 2 seats and was sold from 2005 to 2006.
    It is also joint 3rd in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

21. 2001 BMW M coupé (E36)

    Specific Output: 1.62 hp/in³

    11^th
    

    (2001 - 2002)

    ...M coupé
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    3.2 L Inline 6

    

    155 mph

    

    5.3 seconds

    

    321 hp

    

    21.1 mpg

    

    2 Doors

    

    2 Seats

    

    7.4-14.5 ft³

    

    3,031 lbs

    Front - RWD

    All Specs

    With a specific output of 1.62 hp/in³, the BMW M coupé takes joint ninth place.
    It's a 2 door RWD Coupé with 2 seats and was sold from 2001 to 2002.
    It is also joint 25th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

23. 1997 BMW M Roadster (E36)

    Specific Output: 1.62 hp/in³

    12^th
    

    (1997 - 2000)

    ...Roadster
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    3.2 L Inline 6

    

    155 mph

    

    5.4 seconds

    

    317 hp

    

    21.1 mpg

    

    2 Doors

    

    2 Seats

    

    5.8 ft³

    

    3,142 lbs

    Front - RWD

    All Specs

    With a specific output of 1.62 hp/in³, the BMW M Roadster takes joint ninth place.
    It's a 2 door RWD Roadster with 2 seats and was sold from 1997 to 2000.
    It is also joint 27th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

25. 2001 BMW M Roadster (E36)

    Specific Output: 1.62 hp/in³

    13^th
    

    (2001 - 2002)

    ...Roadster
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    3.2 L Inline 6

    

    155 mph

    

    5.3 seconds

    

    321 hp

    

    21.1 mpg

    

    2 Doors

    

    2 Seats

    

    5.8 ft³

    

    3,197 lbs

    Front - RWD

    All Specs

    With a specific output of 1.62 hp/in³, the BMW M Roadster takes joint ninth place.
    It's a 2 door RWD Roadster with 2 seats and was sold from 2001 to 2002.
    It is also joint 25th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

27. 1998 BMW M coupé (E36)

    Specific Output: 1.62 hp/in³

    14^th
    

    (1998 - 2000)

    ...M coupé
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    3.2 L Inline 6

    

    155 mph

    

    5.5 seconds

    

    317 hp

    

    21.1 mpg

    

    2 Doors

    

    2 Seats

    

    7.4-14.5 ft³

    

    3,230 lbs

    Front - RWD

    All Specs

    With a specific output of 1.62 hp/in³, the BMW M coupé takes joint ninth place.
    It's a 2 door RWD Coupé with 2 seats and was sold from 1998 to 2000.
    It is also joint 27th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

29. 1995 BMW M3 Coupé (E36)

    Specific Output: 1.62 hp/in³

    15^th
    

    (1995 - 1999)

    ...M3 Coupé
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    3.2 L Inline 6

    

    155 mph

    

    5.5 seconds

    

    317 hp

    

    26.7 mpg

    

    2 Doors

    

    5 Seats

    

    14.3 ft³

    

    3,340 lbs

    Front - RWD

    All Specs

    With a specific output of 1.62 hp/in³, the BMW M3 Coupé takes joint ninth place.
    It's a 2 door RWD Coupé with 5 seats and was sold from 1995 to 1999.
    It is also joint 27th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

31. 1995 BMW M3 (E36)

    Specific Output: 1.62 hp/in³

    16^th
    

    (1995 - 1998)

    ...M3
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    3.2 L Inline 6

    

    155 mph

    

    5.5 seconds

    

    317 hp

    

    26.7 mpg

    

    4 Doors

    

    5 Seats

    

    15.4 ft³

    

    3,384 lbs

    Front - RWD

    All Specs

    With a specific output of 1.62 hp/in³, the BMW M3 takes joint ninth place.
    It's a 4 door RWD Sedan with 5 seats and was sold from 1995 to 1998.
    It is also joint 27th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

33. 1995 BMW M3 Cabrio (E36)

    Specific Output: 1.62 hp/in³

    17^th
    

    (1995 - 2000)

    ...M3 Cabrio
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    3.2 L Inline 6

    

    155 mph

    

    5.6 seconds

    

    317 hp

    

    26.7 mpg

    

    2 Doors

    

    4 Seats

    

    8.1 ft³

    

    3,605 lbs

    Front - RWD

    All Specs

    With a specific output of 1.62 hp/in³, the BMW M3 Cabrio takes joint ninth place.
    It's a 2 door RWD Convertible with 4 seats and was sold from 1995 to 2000.
    It is also joint 27th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

35. 2003 TVR T350 C

    Specific Output: 1.59 hp/in³

    18^th
    

    (2003 - 2005)

    ...T350 C
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    3.6 L Inline 6

    

    174 mph

    

    4.5 seconds

    

    350 hp

    

    19.5 mpg

    

    2 Doors

    

    2+2 Seats

    

    8.8-17.7 ft³

    

    2,337 lbs

    Front Mid - RWD

    All Specs

    With a specific output of 1.59 hp/in³, the TVR T350 C takes joint eighteenth place.
    It's a 2 door RWD Coupé with 2+2 seats and was sold from 2003 to 2005.
    It is also 6th in The Best MPG TVR Cars Ever.

37. 2003 TVR Tamora

    Specific Output: 1.59 hp/in³

    19^th
    

    (2003 - 2005)

    ...Tamora
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    3.6 L Inline 6

    

    174 mph

    

    4.5 seconds

    

    350 hp

    

    16.1 mpg

    

    2 Doors

    

    2 Seats

    

    10.9 ft³

    

    2,425 lbs

    Front Mid - RWD

    All Specs

    With a specific output of 1.59 hp/in³, the TVR Tamora takes joint eighteenth place.
    It's a 2 door RWD Convertible with 2 seats and was sold from 2003 to 2005.
    It is also joint 7th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

39. 1995 BMW M3 GT (E36)

    Specific Output: 1.59 hp/in³

    20^th
    

    (1995)

    ...M3 GT
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    3 L Inline 6

    

    155 mph

    

    5.9 seconds

    

    291 hp

    

    25.8 mpg

    

    2 Doors

    

    5 Seats

    

    14.3 ft³

    

    3,219 lbs

    Front - RWD

    All Specs

    With a specific output of 1.59 hp/in³, the BMW M3 GT takes joint eighteenth place.
    It's a 2 door RWD Coupé with 5 seats and was sold during 1995.
    It is also 39th in Cars With Most Powerful Naturally Aspirated Inline 6 Engines.

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