The Mexican auto industry is about to go on a $10 billion factory building spree, illustrating the nation's rising economic challenge to rivals from the United States to China.

Nissan Motor Co Existing Plants: Aguascalientes, Cuernavaca New Plants: Aguascalientes No.2 New Investment: $2 billion Future Products: Nissan Sentra, Infiniti Q30 Annual Capacity by 2020: 1,100,000

Honda Motor Co Existing Plant: El Salto New Plant: Celaya New Investment: $1.3 billion Future Products: Honda Fit, Fit SUV Annual Capacity by 2020: 300,000

Toyota Motor Corp Existing Plant: Tijuana New Plant: TBD New Investment: TBD Future Products: TBD Annual Capacity by 2020: 150,000

Mazda Motor Corp Existing Plant: None New Plant: Salamanca New Investment: $770 million Future Products: Mazda2, Mazda3, Toyota Yaris Annual Capacity by 2020: 230,000

Volkswagen AG Existing Plant: Puebla New Plants: Silao, San Jose Chiapa (Audi) New Investment: $1.85 billion Future Products: Audi Q5, Q6 Annual Capacity by 2020: 850,000

BMW AG Existing Plant: None New Plant: TBD New Investment: TBD Future Products: BMW Z4, 3 Series, 4 Series Annual Capacity by 2020: 200,000

Daimler AG Existing Plant: None New Plant: Aguascalientes (with Nissan) New Investment: TBD Future Products: Mercedes-Benz CLA, GLA Annual Capacity by 2020: 100,000

(Reporting by Paul Lienert in Detroit; Editing by Tim Dobbyn)