Club Info

Club Information

ESCA was formed on August 3, 1963 in Santa Rosa, CA.  Our purpose is to: encourage, present, and participate in sports car events, and exhibitions; encourage safe and sportsman like conduct on public roads; exchange technical information on engine performance and handling; and meet other sports car enthusiasts.

Read the revised 2020 ESCA Constitution:

2020 ESCA Constitution

Auto-Cross Events 

Events are for Club Members Only

ESCA membership is required to be on the site and you must also be 16 years of age or older.

Autocrossing is a low speed, timed event that is safe, challenging and fun. A course usually includes a combination of straight-aways, S-turns, and sweeping turns and is outlined with pylons. One entrant at a time is given a practice lap and one or more timed laps during which he tries to go as fast as possible without hitting any pylons. Autocrossing gives the driver a chance to learn better driving skills as well as respect for a well maintained, good handling automobile. ESCA presents several autocrosses each year.

All Auto-Cross Events are for ESCA members only and the site is not open to the public. 

Due to limited space at the auto-cross site, all drivers must be a registered ESCA member.

Car Classification information is available here. Car Classification 2021

   * * Things Tech Inspector looks at *

  • helmet: must be Snell Approved 2005 or newer. We will place a sticker on the helmet if it passes inspection,                                         (Snell 2010M is allowed)
  • engine bay: must be free of leaks of any kind and no loose wires or failed motor mounts
  • battery: must be properly secured down and terminals tight and positive terminal covered
  • steering: must be tight to the feel with no worn out components
  • suspension: ball joints and bushings must have no obvious play or wear
  • brakes: should be firm to the feel and have obvious sufficient pad material
  • wheels: all wheels must free of obvious cracks with all lug nuts/bolts present and torqued
  • tires: all tires must be crack free with proper tread depth with no exposed cord
  • loose items: interior, trunk and exterior must be free of all loose items
  • car #: car number must be at least 8 inches tall and have contrasting color on both sides of car
  • seat belts: present & secure
  • safety equipment is installed correctly and does not have any excess movement
  • two-strap shoulder harnesses: shall not be worn in open automobiles, which are not equipped with roll bars.
  • roll bars: are REQUIRED in all purpose-built competition cars and any other open cockpit AUTOMOBILES using racing (non-D.O.T. approved) tires

Please remember overall vehicle maintenance and safety is sole responsibility of owner/operator.

The condition of stated items are at the discretion of the event Chair/Co-chair.

  * * Getting your car through Tech Inspection * * 

Car must pass Tech before you can register your car and receive your assigned worker position:

  • Get Tech card at gate, if not emailed to you and keep for the entire season
  • Put the Tech/Registration Card on your windshield or dash (your Tech/Registration Card will be used for each event)
  • Empty all loose items from your Car, Including the Trunk
  • Open Hood & Trunk or Hatch
  • Remove wheel covers or Hub Caps
  • Have Helmet out and ready to be Inspected

If your car does not have a Tech Sticker when you drive up to the Grid you will not be allowed to autocross.!!!!

Rallye Events

A rallye is jokingly referred to as the longest distance between two points. In a variety rallye, participants are given a set of instructions for a route several miles long. It is a test of the ability of the driver and navigator to follow those instructions as they travel on the roads looking for signs and situations that fit the definitions of the rallye. A rallye is not a speed event. ESCA sponsors the annual April Fool’s Rallye which is open to the public as well as several others for the enjoyment of the club members. Several of ESCA’s rallies have won the N.C.S.C.C. Variety Rally of the Year Award.

Tour Events

Tours are casual club events, drives planned along scenic routes or to places of interest. These usually take place on weekends, however, we do have some overnight tours to special activities and events. Recent tours include trips through the wine country, to the Infineon Raceway Classic Car Races, and to restaurants.

Social Events

Each year we have a summer party and a Christmas party. Other activities have included potluck dinners, cruises, and picnics.

ESCA Meetings

1st and 3rd Tuesdays of each month at 7pm.


Contact ESCA

Empire Sports Car Association
P.O. Box 2242
Santa Rosa, CA 95405

Contact ESCA via email at:

Become a ESCA Member

Learn about the club and how to become a member! Click here to start!

Upcoming Events

Recent Photos

IMG_4910 IMG_4902 IMG_4863 IMG_4843 IMG_4821 IMG_4807

Mission Statement

To encourage ownership, operation, and preservation of sports cars, to encourage safe and sportsmanlike conduct on public roads and highways, to arrange and regulate sports car events and exhibitions, and to develop and provide technical information relevant to any of these purposes. Read more »