Engine & Auto Repair in Tigard, OR
Engine and general auto repair for Tigard, Metzger, and Tualatin drivers — ASE-certified technicians at a NAPA AutoCare Center.

What's Included
- •Engine repair and component replacement
- •Cooling system, radiator, and water pump service
- •Timing belt and chain service
- •Suspension and steering repair
- •Exhaust and emissions repair
- •Written estimates before any work begins
A repair shop earns trust in the gap between the diagnosis and the invoice. We put the diagnosis in writing, quote the repair before we start, and call you if what we find underneath changes the number.
As a NAPA AutoCare Center our work is backed by nationwide coverage, and our technicians are ASE-certified and train continuously. The Tigard shop opens late September on SW Pacific Highway, minutes from Washington Square, King City, and Bull Mountain.
Engine Work Done Right
Engine repair is where the stakes are highest and the shortcuts are most tempting. We don't take them. Every engine repair at Green Drop starts with a thorough diagnosis, a written estimate you approve before we start, and parts matched to manufacturer specification.
Our ASE-certified technicians work on every domestic and import make, including hybrids and EVs. Timing belts, head gaskets, fuel systems, ignition, cooling, sensor replacement, driveability diagnosis — we do the whole range and we do it to last.
Every repair carries the NAPA AutoCare 24-month / 24,000-mile nationwide warranty. Drive it cross-country and it's still covered at any NAPA shop in North America.

Why NAPA AutoCare Matters
Not every shop is a NAPA AutoCare Center. The certification requires technician credentialing, shop equipment standards, and — the piece customers care about most — a 24-month / 24,000-mile nationwide warranty on parts and labor.
That warranty is honored at every NAPA shop in North America. Road trip from Portland, engine problem in Denver — walk into a NAPA shop, show your paperwork, and the repair's covered.
We believe in our work, and we back it up. NAPA does too.
What You Get at Green Drop
Written diagnosis with root cause — not just the trouble code
Parts estimate in writing — you approve before any work starts
OEM or OE-equivalent parts — never the cheapest aftermarket substitute
Eco-conscious shop practices — re-refined oils, responsible parts disposal, DEQ EcoBiz certified
24-month / 24,000-mile NAPA AutoCare nationwide warranty on parts and labor
Hybrid and EV-certified technicians — we're qualified to work on high-voltage systems
Member discount — Green Drop members save on repair labor and get priority scheduling
Engine and Drivability Services
Engine Diagnostics and Drivability
Rough idle, misfires, stalling, hesitation, check engine lights. We diagnose the root cause — sensor, ignition, fuel, mechanical — and fix it, not just clear the code.
Timing Belt, Water Pump, and Belts
Interval replacement before failure, or emergency replacement after. Timing belts often share labor with water pumps — we do the whole job at once, not a second visit six months later.
Head Gasket and Valve Cover Service
Coolant loss, oil consumption, exhaust smoke, overheating — we diagnose and repair head gasket failures, valve cover leaks, and related cooling issues.
Fuel System Service
Injectors, fuel pumps, fuel pressure regulators, filters. Fuel system problems show up as drivability issues, hard starts, or failed emissions — we diagnose and repair.
Ignition System
Spark plugs, ignition coils, distributor components, wiring. Misfires, rough running, or poor fuel economy often trace back to ignition — we test before replacing.
Hybrid and Electric Vehicle Service
High-voltage system certified. We service hybrid cooling systems, inverters, electric drive components, and perform brake and suspension work safely on EVs.
Why Green Drop Garage
Eco-Friendly by Design
We use re-refined oil and a closed-loop recycling system so your car gets the same protection with a lighter footprint. Better for your engine, better for the planet.
ASE-Certified & NAPA-Backed
Every repair is performed by ASE-certified technicians and backed by our own 24-month shop warranty, extended nationwide through NAPA AutoCare's 24-month / 24,000-mile warranty at 17,000+ shops across the US.
Honest, No-Upsell Diagnosis
We show you exactly what we find and explain your options in plain language. You only pay for what your car actually needs — no pressure, no surprise add-ons.
What Green Drop Garage – Tigard customers say
"The best auto repair experience I have ever had. Eco-friendly and no pushy sales!"
Sarah M.
"Honest, fast, and local. Love that they use re-refined oil."
John D.
"Six locations makes it so convenient. The concierge service is a lifesaver."
Emily K.