On this page
Diamond Bar commuters who spend hours in 57 and 60 traffic can bring their cars to Route 66 Auto Repair, a single shop at 1775 W Foothill Blvd in Upland. Take the 57 north to the I-10 and exit at Central Ave. ASE-certified technicians test transmissions, brakes and warning lights before recommending work, and you approve a written estimate first. Hybrids are welcome too.
How do Diamond Bar drivers reach Foothill Blvd and Central?
Get on the 57 heading north, away from the 60. The 57 climbs out of Diamond Bar and meets the I-10 in Pomona. Head east on the I-10, exit at Central Ave, and drive north. Central runs straight up to Foothill Blvd in Upland. We are at that corner, one block east of In-N-Out Burger.
Traffic on the 57 is heavy in both directions at commute hours, so a mid-morning drop-off is often easier. The directions page has a map of the last turns.
What does the 57 and 60 commute do to your car?
The stretch where the 57 and 60 share lanes near Grand Ave is one of the most congested in Southern California. Hours of creep-and-stop driving build heat in the transmission, glaze brake pads and keep cooling fans running. The car covers few miles but works hard.
At home, Diamond Bar streets climb and fall through the hills. Steep driveways and long residential grades add brake wear, and summer heat makes every climb tougher on an older engine. Many Diamond Bar commuters also drive newer cars and hybrids packed with sensors, where a warning light needs a proper scan, not a guess.
What do Diamond Bar drivers bring in most?
- Transmission service and shift complaints. Slow traffic is hard on automatic and CVT (continuously variable) transmissions. We check fluid condition and codes before anything else. See transmission services.
- Brakes worn by traffic and hills. Pads and rotors wear quickly with constant stops. We measure and show you the numbers. Visit brake services.
- Warning lights on newer cars and hybrids. We read codes with a scan tool and then test the fault. For hybrids, tell us it is a hybrid at intake and we will explain what we can take on. See diagnostics and inspections.
What if the car overheats in 57 traffic?
Crawling traffic is where overheating shows up first. If the gauge rises, turn off the AC and turn the heater on high to pull heat away from the engine. If it keeps climbing, work your way right and exit, or stop on the right shoulder with hazards on. Shut the engine off and keep the radiator cap closed.
Call (909) 608-7699 once you are safe. We accept tow-ins, and driving an overheating engine the rest of the way can turn a hose repair into an engine repair. If a hybrid shows a warning and will not go into ready mode, have it towed and tell us it is a hybrid.
Our process for Diamond Bar drivers
Step 1: Pick a drop-off window
Call before you drive. A time outside rush hour often works better, and we text you if the board changes.
Step 2: Hear the fee
The counter states the diagnostic fee first. It applies to approved related repair.
Step 3: Scan and test
The technician reads codes, then confirms the cause with hands-on tests.
Step 4: Get it in writing
The estimate labels each line need-now or schedule-later. If two technicians are needed, we explain first.
Step 5: Repair, check, drive
We repair to spec, quality-check the car and road-test it.
What's included for Diamond Bar customers
Included on the work order
- 01Diagnostic fee stated before testing
- 02Code scan plus hands-on confirmation
- 03Written estimate before extra work
- 04Photos of failed parts when they matter
- 05Quality check and road test
- 06Warranty coverage written on the invoice
Should you fix it this week or plan it?
Need now: call
- A transmission that slips or shudders in traffic
- A brake pedal that pulses or sinks
- A flashing check engine light
Need later: book
- A transmission fluid service due by mileage
- Pads with some life left but wearing fast
- A maintenance reminder with no warning lights
How can a Diamond Bar commuter plan around repairs?
Drop-offs are often easiest. You can leave the car before work or use the after-hours key drop the night before. Same-day work happens when the board allows, so call before you drive over. Phone quotes are ranges until we inspect the car. AAA members get 10% off parts and labor, up to $75, at an AAA Approved Auto Repair (opens in a new tab) shop like ours. More ideas are on our daily commuters page. Hours are Monday to Friday 8 AM to 5 PM and Saturday 8 AM to 2 PM.


Frequently asked questions
How far is Route 66 Auto Repair from Diamond Bar?
Take the 57 north to the I-10, head east, exit at Central Ave, and go north into Upland. Commute traffic changes the drive a lot, so check your map app before leaving.
Is it worth driving from Diamond Bar to an Upland shop?
Many commuters want to know exactly what is wrong before they pay. We state the fee, confirm codes with real tests, and write the estimate before any work. You decide what is worth doing now.
Can you take a tow-in from Diamond Bar?
Yes. Call (909) 608-7699 so we expect the car. If it arrives after hours, the key can go in our after-hours key drop. For hybrids, let us know it is a hybrid when you call.
Can I drop my car off after hours if I work in Diamond Bar?
Yes. Leave it in our lot the evening before and put the key in the after-hours key drop. Call when we open, and we will contact you before any repair starts.
Is there a mechanic near Diamond Bar open on Saturday?
Our Upland shop is open Saturday from 8 AM to 2 PM and Monday to Friday from 8 AM to 5 PM. We are closed Sunday. Call first, since Saturday fills early.
Visit the shop
Route 66 Auto Repair
1775 W Foothill Blvd, Upland, CA 91786 (opens Google Maps)Foothill Blvd and Central Ave, one block east of In-N-Out Burger. Between the I-10 and the 210 on Historic Route 66.
(909) 608-7699info@route66autorepairshop.com| Monday | 8 AM–5 PM |
|---|---|
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | 8 AM–2 PM |
| Sunday | Closed |
