Unlike General Motors, many automotive brands have been supportive of marketing via Facebook, and it shows. New statistics from social benchmarking platform Unmetric show that Audi and Mercedes-Benz USA have been two of the most effective automotive companies on Facebook, while Infiniti is the fastest-growing car company on the social network.

Unmetric recently analyzed the way automotive companies perform on social media sites such as Facebook and Twitter, using the Unmetric Score. The Unmetric Score takes into account content strategy, engagement, growth, timing, and frequency of posts. Here’s how the top brands did on Facebook, measured from Oct. 1 to Dec. 31, 2012:

Facebook Unmetric Score
  1. Audi USA – 64
  2. Mercedes-Benz USA – 46
  3. Ford – 42
  4. Lexus – 39
  5. Chevrolet – 38
Total Fans
  1. Ford – 8,715,176
  2. Audi USA – 6,176,876
  3. Chevrolet – 6,071,149
  4. Honda – 5,438,433
  5. Dodge – 2,344,643
Growth
  1. Infiniti – 82.1%
  2. Mercedes-Benz USA – 55.1%
  3. Subaru – 22.5%
  4. Kia – 19%
  5. Hyundai – 17.9%

Highest Engagement Score (Calculation of likes, comments, shares, and impressions that each Facebook post receives)

  1. Audi USA – 244
  2. Mercedes-Benz USA – 244
  3. Lexus – 178
  4. Dodge – 166
  5. Volkswagen – 117
Replies
  1. Nissan – 669
  2. Volkswagen – 571
  3. Toyota – 442
  4. Chevrolet – 437
  5. Kia – 373
Average Reply Time (HH:MM:SS)
  1. Audi –  6:28:00
  2. Chrysler – 8:50:00
  3. Subaru – 9:54:00
  4. Mercedes-Benz USA – 10:04:00
  5. BMW – 12:13:00

Readers: Do you like your car’s company on Facebook?