The people who wrote this song were:
Gerard Edward Levert / Andy Gibson / Janis Joplin (I'm not sure if she had a part too)

And I am GadrathGuitar who brings these chords to all of you,
ENJOY !

Intro: E
E (022100@1)               C#m (x13321@4)    A (x02220@1)     EOh (022100@1)lord won't you buy me a Mercedes Benz.
                     C#m (x13321@4)       G#m (133111@4)     B7 (x21202@1)My friends all drive Porsches, I must make amends.
       E (022100@1)         E7 (020130@1)         A (x02220@1)          AmWorked (x02210@1)hard all my lifetime, no help from my friends.
   E (022100@1)               C#m (x13321@4)    B7 (x21202@1)     ESo (022100@1)oh lord won't you buy me a Mercedes Benz.

E (022100@1)               C#m (x13321@4)    A (x02220@1)   EOh (022100@1)lord won't you buy me a color TV.
            C#m (x13321@4)      G#m (133111@4)          B7Dialing (x21202@1)for Dollars is trying to find me.
  E (022100@1)        E7 (020130@1)        A (x02220@1)       AmI (x02210@1)wait for delivery each day until 3.
      E (022100@1)            C#m (x13321@4)   B7 (x21202@1)  ESo (022100@1)oh lord won't you buy me a color TV.

E (022100@1)               C#m (x13321@4)    A (x02220@1)          EOh (022100@1)lord won't you buy me a night on the town.
                C#m (x13321@4)     G#m (133111@4)               B7I'm (x21202@1)counting on you lord, please don't let me down.
E (022100@1)            E7 (020130@1)        A (x02220@1)          AmProve (x02210@1)that you love me and buy the next round.
   E (022100@1)            C#m (x13321@4)    B7 (x21202@1)         EOh (022100@1)lord won't you buy me a night on the town.

Everybody!

F (133211@1)            Dm (xx0231@1)     Bb (x1333x@1)     FOh (133211@1)lord won't you buy me a Mercedes Benz.
                     Dm (xx0231@1)        Gm (355333@1)      C7 (x32310@1)         
My friends all drive Porsches, I must make amends.
       F (133211@1)         F7 (131241@1)         Bb (x1333x@1)         BbmWorked (x13321@1)hard all my lifetime, no help from my friends.
[slow tempo- Coda]
      F (133211@1)            Dm (xx0231@1)     Gm (355333@1)  C7 (x32310@1)BbF
So oh lord won't you buy me a Merce-des Be-enz.

I think that chords are cute, maybe mistakes on 2? or 4? line, but are OK.
Bye!