Today, I received an email from UK saying that I have won M5 sedan and 500K pounds

in BMW promotions, a lottery by random email search. They want me to contact a Barrister with some personal data.
I am confused, is this a scam? Should I reply to the email or ignore it? Have anybody of you heard about such promotions? I need your input.
__________________
2011 535i Alpine White, Oyster/Black leather, Sports Package, Premium Package 1, Sports Auto Transmission, Navigation, 4 zone climate control, Convenience Package
2006 325i Arctic Metallic, Grey leather, Steptronic,Premium Package
