Key Takeaways
What you'll learn in this article
- 1Industry-standard conversion warranties are 1 year. Legend's 3-year/36,000-mile warranty is among the strongest available.
- 2A real warranty should cover upholstery, cabinetry, electrical, and structural conversion components.
- 3Mercedes drivetrain warranty is always separate and handled by Mercedes-Benz dealers.
- 4Five critical questions to ask any builder about warranty terms before signing.
- 5Warranty work is performed at our Alvarado, TX facility; remote warranty claims handled case-by-case.
Table of Contents
Why Warranty Coverage Matters More Than Price
A Sprinter van conversion is a $80K–$200K investment. The components that can fail — electrical, upholstery, cabinetry, integrated AV — are exactly the components that come with the conversion (not the Mercedes factory warranty).
That's why warranty terms are the single most important comparison metric between builders. A $5K cheaper build with a 1-year warranty vs. a slightly higher-priced build with a 3-year warranty? The math overwhelmingly favors the longer warranty. Conversion components typically fail in the 14-30 month range, not in year one.
5 Questions to Ask Any Conversion Builder About Warranty
- How long is the workmanship warranty, in years AND miles?
- What specifically is covered? What's excluded?
- Where is warranty work performed? (Their shop only? Local dealers? Mobile service?)
- Is the warranty transferable if I sell the van?
- Can you show me the actual warranty document? (Not a brochure — the document you'll sign.)
Any builder unwilling to answer these directly is a red flag. We provide our full warranty document at consultation.
What a Real Conversion Warranty Should Cover
Upholstery & Interior Materials
Seat covers, headliners, wall panels, flooring — all the soft surfaces that absorb daily wear.
Cabinetry & Structural Build Elements
Tables, partition walls, hidden storage, ceiling panels — anything the builder fabricated and installed.
Electrical Systems
Custom wiring runs, fuse panels, ambient lighting controllers, AV integration, additional batteries, USB-C charging ports.
Paint & Exterior Modifications
Custom paint, body moldings, decals, running boards, trim work — anything the builder added beyond factory.
What Legend Conversion's 3-Year/36,000-Mile Warranty Covers
Our warranty covers workmanship on every conversion component:
- All upholstery (seats, headliners, wall panels, flooring)
- Custom cabinetry and structural modifications
- Electrical integration (wiring, fuse panels, switches, USB-C, lighting controllers)
- AV and entertainment systems we installed
- Paint and exterior modifications we performed
- HVAC integration (where conversion-installed)
- Privacy partitions and powered systems
Three years OR 36,000 miles, whichever comes first.
What the Warranty Does NOT Cover
- Mercedes-Benz drivetrain — Covered by your Mercedes factory warranty (separate)
- Mercedes electrical systems — Factory wiring is covered by Mercedes
- Wear-and-tear consumables — Light bulbs, batteries beyond 18 months, cosmetic wear
- Third-party modifications — Anything installed by another party after delivery
- Misuse or accident damage — Covered by your insurance, not warranty
- Acts of God — Hail, flooding, etc.
Full terms are provided with your build contract.
How to Register & Use Your Warranty
- At delivery: We hand you a printed warranty document with your build serial number and key dates.
- Issue arises: Call or email our service team. Photo/video helps us diagnose quickly.
- Diagnosis: Most issues we can resolve over phone/email.
- Service: Bring the van to our Alvarado facility OR coordinate enclosed transport if you're remote. Most warranty work is completed in 1–5 business days.
- No cost to you for covered items.
See our completed builds and read about Legend's build process.
Ready to compare warranty terms before buying? Contact us and we'll send our full warranty document so you can compare line-by-line with any other builder.
Frequently Asked Questions

Written by
Legend Conversion Team
Custom Van Specialists
The Legend Conversion team combines decades of expertise in automotive engineering, interior design, and luxury vehicle customization. Based in Alvarado, Texas, our specialists are dedicated to transforming Mercedes-Benz Sprinter vans into extraordinary vehicles.
