Meet Sergeii – Your Trusted Mobile Mechanic

Meet Sergeii – Mobile Mechanic & DIY Motorsports Enthusiast in Round Rock, TX

Sergeii isn’t your average mechanic — he’s a certified mobile technician with deep roots in performance tuning, a lifelong passion for motorsports, and a commitment to honest, high-quality service. Based in Round Rock, TX, Sergeii brings expert mechanical care directly to your home, workplace, or roadside — so you can skip the shop and still get dealer-level results.

Originally from Ukraine, Sergeii combines his European work ethic with years of hands-on experience in U.S. dealership service departments, independent repair shops, and under the hood of his own DIY race builds. Whether he’s diagnosing a check engine light or fine-tuning a daily driver, Sergeii approaches every job with the same precision he applies to his personal track cars.

He is ASE certified in multiple areas including engine performance, brake systems, and electrical diagnostics. His knowledge of both import and domestic vehicles makes him a go-to technician for Round Rock drivers who want things done right — the first time.

Project Highlights & Recent Work

Recently, Sergeii completed a full starter and alternator replacement on a Subaru WRX — resolving a tricky intermittent no-start issue. He also overhauled the suspension system of a Chevy Tahoe in a customer’s driveway, saving the client nearly $1,000 in labor costs. When a local business owner’s delivery van wouldn’t start, Sergeii diagnosed and replaced a failed ignition switch — getting them back on the road within two hours.

Customer Feedback

Sergeii’s clients often praise his thorough explanations, honest pricing, and deep knowledge of vehicle systems — especially when it comes to performance-focused diagnostics. One customer wrote:

"Sergeii walked me through everything, didn’t push unnecessary repairs, and even gave tips on how to improve my engine response. He knows his stuff!"

Another review shared:

"He showed up on time, had every tool he needed, and got my BMW sorted faster than the dealership could even schedule me."

If you're in Round Rock or nearby and want a mechanic who knows cars inside and out — from everyday commuters to race-tuned builds — Sergeii is the mechanic to call. Whether it’s diagnostics, repairs, upgrades, or general maintenance, he brings speed, skill, and integrity straight to your location.

Book your next mobile repair with Sergeii and experience performance-driven service that never cuts corners.

Frequently Asked Questions About - Sergeii the Mechanic

1. Who is Sergeii the Mechanic?

Sergeii is a certified mobile mechanic with years of hands-on experience in both dealerships and independent shops. He specializes in diagnostics, general repairs, and on-site auto services across Round Rock.

2. What areas does Sergeii service?

Sergeii currently serves Round Rock, Hutto, Leander, Austin and nearby areas throughout Texas with fully mobile auto repair services.

3. What types of services does Sergeii provide?

Sergeii handles everything from engine diagnostics, starter and alternator replacements, brake jobs, battery swaps, oil changes, suspension work, to pre-purchase inspections — all on-site.

4. Is Sergeii ASE Certified?

Yes. Sergeii holds multiple ASE certifications, including diagnostics, electrical systems, and engine performance, proving his dedication to top-tier, professional service.

5. How do I book an appointment with Sergeii?

You can easily book online or call directly to schedule a mobile visit. Sergeii arrives with the tools and parts needed to diagnose and repair most issues on the spot.

6. Is the work guaranteed?

Absolutely. All services performed by Sergeii are backed by his personal service warranty to ensure peace of mind and customer satisfaction.

7. What do customers say about Sergeii?

Customers consistently praise Sergeii for his honesty, professionalism, and prompt service. His repeat clients and 5-star reviews speak for themselves.

Services Provided By Sergeii the Mechanic

✔ Engine Diagnostics

Full system scans using dealer-level tools to identify engine issues, misfires, warning lights, and drivability problems — all at your location.

✔ Brake Repair

On-site brake pad, rotor, and caliper replacement to restore safe stopping power. Squeaks, vibrations, or soft pedals? Sergeii will fix it fast.

✔ Alternator Replacement

If your battery keeps dying or lights are dim, Sergeii will test and replace your alternator to keep your car’s electrical system running strong.

✔ Starter Replacement

Clicking sound or no crank? Sergeii diagnoses and replaces faulty starter motors right in your driveway — no towing needed.

✔ Battery Testing & Replacement

Dead battery? Sergeii tests your battery, alternator, and starter, and replaces the battery on-site if needed — including safe disposal of the old one.

✔ Suspension Repair

Handling issues, clunks, or uneven tire wear? Sergeii inspects and replaces shocks, struts, control arms, and more to restore smooth ride quality.

✔ Oil Changes

Routine oil and filter changes performed at your home or office, using high-quality oils suited to your vehicle’s specifications.

✔ Pre-Purchase Vehicle Inspections

Thinking about buying a used car? Sergeii will perform a thorough inspection on-site and provide a detailed report so you can buy with confidence.

✔ Roadside Diagnostics

Stranded or stuck? Sergeii offers fast roadside diagnostics and emergency repair guidance to get you moving again or plan the right next step.

✔ General Repairs & Maintenance

From belt replacements to fluid checks and tune-ups, Sergeii handles a wide range of mobile repairs to keep your vehicle in top shape.