R G Engine Performance

Upland, United States

5

7 reviews

Contacts

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Telephone:
+1 909-931-1567
Address:
259 E. Arrow Hwy Ste B, Upland, CA, 91786
Nearby public transportation stops & stations:
1.1 miFoothill Transit 482
1.2 miFoothill Transit 194
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Today

Today –
Local time (Upland) 17:20 Monday, 2 June 2025

Business hours

Monday –
Tuesday –
Wednesday –
Thursday –
Friday –
Saturday –
Sunday –

Description

Specialties

Complete automotive repairs and maintenance.

Air condition, Brakes, Fuel systems, Computer diagnoses, Steering system, Engine internal repairs, Transmissions automatic and manual, Coolant systems, Suspension systems including electronically controlled, Wheels and tires, Emission controls, Electric and electronic systems.

Star Certified State Smog check and repair station.

History

Established in 1990.

Business started on October 1990 in Hacienda Heights, Ca. Stayed in the same location till 2001 when we moved to downtown Upland, and still there till present time.

Meet the Business Owner

Ralph G.

Business Owner

Graduated with a bachelor degree in Mechanical Engineering on 1982,

Worked as Mechanical Engineer in a power plant

Started automotive repair business in 1990 till present

ASE certified technician with advanced engines performance

Working on getting the FAA aviation maintenance license (A&P) expected to have it by February 2013

FAA certified pilot

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7 reviews of R G Engine Performance

No registration required
Place rating: 5
Upland, CA
Ralph’s honest and efficient. I’ve taken my cars to him for well over 7 years. Never a complaint.
Place rating: 5
Rancho Cucamonga, CA
I’ve been using RG Engine Performance & Auto Care for years. He has moved over to Arrow across the street from the post office. Smog no problem, older cars no problem, newer cars no problem. Much better than the dealers and at half the price, and he is really quick too. Honest, fair prices and a person you can trust. — Highly Recommended.- I only wish I could find a dentist like this.
Place rating: 5
Ontario, CA
Finally a honest Mechanic, had a great experience, he told me what was most necessary and what could wait for later. Thanks
Place rating: 5
Lake Forest, CA
I will be a regular customer! I have gone to R.G. Performance a couple times. The service is excellent and R. G is fair and trustworthy. I have gone to other mechanics but have never received such quality service. All my repairs were thoroughly explained, including the cost, and completed in a timely manner. Besides great service and repairs the shop is easy to get too which is helpful if you need to get a ride.
After having my car repaired at R. G Performance I know that my car and I are in good, trustworthy hands. I don’t look forward to car repairs but at least now when I am in need of service I know where I will be taking my vehicle!
Place rating: 5
Upland, CA
My wife and I have been coming to RG for years. We’ve been very satisfied with the work Ralph has done for us. His pricing is fair and he does a good job providing options when work needs to be done.
Place rating: 5
Upland, CA
They do great work here. I have a 2004 Jeep Rubicon and I had my engine mounting bolts sheer off of the engine block leaving an inch of threaded bolt in my cast iron block. The owner was great, he use to work on oil rigs and they always had bolts sheer and he would have to drill them out and re-​tap the holes. He did the same for my Jeep and it was done quickly and a pretty good price.
Place rating: 5
Fontana, CA
I like this shop I used to live in upland and never even knew it was there I needed a mechanic to change my shocks belts and valve cover gasket so i googled and this shop came up i was greatly surprised by the friendly gentleman who greeted me asked me about my car (I have a 2001 nubira daewoo) i think his name was Ralph he was very knowledge able and did a fantastic job although it was a bit pricey i would go back to him in a heart beat i really felt like he cared and stood behind his work I would definitely recommend this shop if you wanted your car to be taken care of and all the services done right the first time!