Service Specials

Oil Change Special

Oil Change Special
*Cannot be combined with other offers. Up to 5 quarts. More than 5 quarts at an additional cost. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

Brake Service Special

Brake Service Special
*Cannot be combined with other offers. Limit one per customer. Not valid on prior purchases. See Service Advisor for details. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
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If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

Buy 3 Oil Changes Get 1 Free

Buy 3 Oil Changes Get 1 Free
*Cannot be combined with other offers. Limit one per customer. Up to 5 quarts. More than 5 quarts at an additional cost. See Service Advisor for details. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
Schedule Service

Get Your Mobile Coupons

If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

Is Your Check Engine Light On?

Is Your Check Engine Light On?
*Cannot be combined with other offers. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
Schedule Service

Get Your Mobile Coupons

If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

Multi-Point Inspection Free

Multi-Point Inspection Free
*Cannot be combined with other offers. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
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Get Your Mobile Coupons

If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

Spend More,
Save More

Spend More, <br>Save More
*Cannot be combined with other offers. Limit one per customer. Not valid on prior purchases. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
Schedule Service

Get Your Mobile Coupons

If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
*Cannot be combined with other offers. Only valid at STG Auto Group's Service Center.
Offer Expires 09-30-2021.

Military Discount

Military Discount
*Cannot be combined with other offers. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
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If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

Senior Discount

Senior Discount
*Cannot be combined with other offers. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
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If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

Student Discount

Student Discount
*Cannot be combined with other offers. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
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Get Your Mobile Coupons

If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

100K Club

100K Club
*Cannot be combined with other offers. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
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Get Your Mobile Coupons

If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

Battery Checks

Battery Checks
*Cannot be combined with other offers. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
Schedule Service

Get Your Mobile Coupons

If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
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PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.

Shuttle

Shuttle
*Cannot be combined with other offers. Only valid at STG Auto Group of Montclair and STG Auto Group of Bellflower.
Schedule Service

Get Your Mobile Coupons

If you have previously unsubscribed from our messaging service, send "unstop" to (844) 325-8447 before entering your phone number below.
Leave this field empty
PARTS & SERVICE CENTER: (909) 344-5513
By pressing "Send", you consent to be contacted at the phone number you provided - which may include autodials, text messages and/or pre-recorded calls. By subscribing to receive recurring SMS offers, you consent to receive text messages sent through an automatic telephone dialing system, and message and data rates may apply. This consent is not a condition of purchase. You may opt out at any time by replying STOP to a text message, or calling (888) 576-1136 #2, to have your telephone number removed from our system.
Offer Expires 09-30-2021.
Dealer Information
STG Auto Group Ontario, Montclair & Garden Grove, CA Get Directions
STG Montclair: (909) 341-1189
STG Ontario: (909) 344-5390
STG Garden Grove: (714) 886-6646
STG Bellflower: (562) 262-9051
Sunday:
9:00 AM - 9:00 PM
Monday:
9:00 AM - 9:00 PM
Tuesday:
9:00 AM - 9:00 PM
Wednesday:
9:00 AM - 9:00 PM
Thursday:
9:00 AM - 9:00 PM
Friday:
9:00 AM - 9:00 PM
Saturday:
9:00 AM - 9:00 PM
STG Montclair/Ontario: (909) 344-5513
STG Bellflower: (562) 262-9151
Sunday:
CLOSED
Monday:
8:00 AM - 5:00 PM
Tuesday:
8:00 AM - 5:00 PM
Wednesday:
8:00 AM - 5:00 PM
Thursday:
8:00 AM - 5:00 PM
Friday:
8:00 AM - 5:00 PM
Saturday:
8:00 AM - 5:00 PM
STG Montclair/Ontario: (909) 344-5513
STG Bellflower: (562) 262-9151
Sunday:
CLOSED
Monday:
8:00 AM - 5:00 PM
Tuesday:
8:00 AM - 5:00 PM
Wednesday:
8:00 AM - 5:00 PM
Thursday:
8:00 AM - 5:00 PM
Friday:
8:00 AM - 5:00 PM
Saturday:
8:00 AM - 5:00 PM
Phone: