Ontario's Trusted Diesel Experts

Is Your Truck
Running Right?

From routine maintenance to heavy-duty diesel repairs, we bring honest, expert craftsmanship to every vehicle that rolls into our shop.

Call (541) 889-2664 View Services
15+
Years Experience
100%
Integrity
All
Makes & Models
What We Do

Complete Auto & Diesel Services

From light maintenance to complex engine overhauls, we handle it all with the same commitment to quality and transparency.

Diesel Engine Repair

Complete diagnostics and repair for diesel engines. From fuel systems to turbochargers, we keep your heavy-duty machines running at peak performance.

Brake Service

Professional brake inspections, pad replacements, rotor resurfacing, and complete brake system repairs for cars and trucks alike.

Oil Changes

Regular maintenance matters. We offer conventional, synthetic blend, and full synthetic oil changes using quality products for your vehicle.

Transmission Service

Automatic and manual transmission repairs, fluid changes, and complete rebuilds. We diagnose transmission issues quickly and accurately.

Diagnostic Services

State-of-the-art diagnostic equipment to pinpoint electrical issues, check engine lights, and performance problems with precision.

Pre-Purchase Inspections

Buying a used truck or car? Our thorough inspections give you the confidence to make a smart purchase with no surprises.

About Us

Built on Trust,
Driven by Integrity

At Integrity Auto & Diesel Repair, we believe that your vehicle deserves nothing less than honest, expert care. Located in the heart of Ontario, Oregon, we've been serving our community with dedication and transparency since day one.

Whether you're driving a daily commuter or a heavy-duty work truck, we treat every vehicle with the same level of care and attention. Our team combines decades of experience with modern diagnostic technology to deliver reliable, long-lasting repairs.

Transparent pricing with no hidden fees or surprise charges
Certified technicians with extensive diesel and automotive experience
Quality parts and workmanship guaranteed on every job
Integrity Auto & Diesel Repair workshop
Trusted Local Shop
Serving Ontario & Surrounding Areas
Why Choose Us

The Integrity Difference

We don't just fix cars — we build lasting relationships with our customers through honesty, expertise, and a genuine commitment to getting it right the first time.

Fair & Honest Pricing

We provide detailed estimates before starting any work. No surprises, no upselling — just straightforward, competitive pricing.

Convenient Location

Easily accessible right in downtown Ontario at 78 SW 5th Ave. Free parking available for all our customers.

Quick Turnaround

We understand your time is valuable. We work efficiently to get you back on the road as quickly as possible.

Customer-First Approach

Your satisfaction is our priority. We explain every repair in plain language and never recommend unnecessary services.

Ready to Experience Honest Auto Care?

Stop by our shop or give us a call. We're here to help with all your automotive and diesel repair needs.

(541) 889-2664 Send a Message
Contact Us

Get in Touch

Have a question or need to schedule a service? Reach out to us — we're always happy to help.

Our Location
78 SW 5th Ave
Ontario, OR 97914-3639

Send Us a Message

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