I know my mom's side of the family used to be rather heavy on Mopar, but as of now...hmm, let's see.
Me: 1985 300D, 1984 Ford F-250 truck (only two diesels around

)
My mom: 1994 Ponticrap Grand Prix
My dad: 1967 Ford F-250 truck, 1992 Chrysler LeBaron
Mom's side:
Grandmother: 1990 or so Toyota Corolla
Grandfather: 2001 Ford Ranger (replaced the late '70's Dodge/Mitsubishi D-50 truck that he drove into the ground)
Uncle: mid '90's Ford Ranger, late '80's Toyota Camry
Aunt: 1994 Geo Prizm
Aunt: 2001 Chrysler PT Cruiser; another 2001 Chrysler PT Cruiser
Uncle: 1994 Ford Ranger; 2002 Chrysler Sebring
Dad's side:
Grandmother: 1988 or so Buick Regal (I think; it's a 4 door sedan)
Aunt: 1999 or 2000 Honda CRV
So, that's 1 Mercedes, 5 Fords, 4 Chryslers, 3 Generic Motors, 2 Toyotas, and one Honda. So, looks like Ford wins now.