Overall Transmission Ratio I, Calculating

WARNING: This page is about a different car, the 2009 Volkswagen Rabbit, 2008 Volkswagen Rabbit, 2007 Volkswagen Rabbit, and 2006 Volkswagen Rabbit. However, it is still accessible from the selected car via links, so may be relevant.

Example:

	5th Gear	Final Drive
Drive gear	ZG₁ = 39	ZA₁ = 18
Driven gear	ZG₂ = 29	ZA₂ = 61

i = Z₂ : Z₁^*

i_G = gear ratio = ZG₂ : ZG₁ = 29: 39= 0.744

i_A = axle ratio = ZA₂ : ZA₁ = 61 : 18 = 3.389

i_total = total ratio = i_G x i_A = 0.744 x 3.389 = 2.521

^* Z₁ = number of teeth on the drive gear, Z₂ = number of teeth on the driven gear