In a Lemon Law trial, your case lives or dies on your paper trail.
Every repair visit, every complaint, every communication—these documents collectively tell the story of your defective vehicle.
But before that story can be told, you must clear one critical hurdle:
👉 You must authenticate your evidence.
This post dives deeper into the practical realities of authenticating different types of records and how to avoid common mistakes that can derail your case.
Why Authentication Is Often the Battleground
In many Lemon Law trials, the facts are not heavily disputed.
What is disputed is:
- Whether the documents are admissible
- Whether they are reliable
- Whether they prove what you claim
This is where authentication becomes a battleground.
Laying the Foundation: The Basics
To authenticate a document, you need:
- A witness or certification
- A connection to the document
- Evidence of reliability
Without this foundation, even the strongest evidence can be excluded.
Authenticating Dealership Records: The Core of Your Case
Dealership records are usually the most important evidence.
Key Strategy
Always assume you will need:
- A custodian of records
- Or a business records affidavit
Practical Tip
Subpoena records early and request:
- Certified copies
- Affidavits
Dealing With “Customer States” Entries
These entries can be powerful—but also problematic.
They are:
- Statements attributed to the consumer
- Sometimes incomplete or paraphrased
Authentication Approach
You can:
- Testify that you made the complaint
- Clarify inaccuracies
Electronic Records: Emails and Texts
Modern cases rely heavily on electronic evidence.
Challenges
- Authenticity disputes
- Alteration concerns
Solutions
- Show sender/recipient identity
- Use timestamps
- Provide context
Authenticating Manufacturer Records
Manufacturers often produce:
- internal reports
- warranty claims data
- repair authorizations
These can be authenticated through:
- corporate representatives
- discovery admissions
Using Admissions to Your Advantage
If the manufacturer:
- relies on certain records
- references them in their case
You can argue they are:
👉 adopted admissions
This can simplify authentication.
Expert Testimony as a Bridge
Experts can:
- rely on records
- explain them
- connect them to conclusions
Even if a document has limitations, an expert may still use it as part of their analysis.
Authenticating Digital Vehicle Data
Modern vehicles generate data such as:
- diagnostic codes
- event logs
- telematics
Challenges
- technical complexity
- proprietary systems
Solutions
- expert testimony
- manufacturer witnesses
Common Authentication Mistakes
1. Waiting Until Trial
Authentication should be planned early.
2. Assuming Documents Will Be Admitted
Never assume—always prepare.
3. Failing to Subpoena Witnesses
Without a custodian, records may be excluded.
4. Ignoring Hearsay Issues
Authentication and hearsay are related—but separate.
Trial Preparation Checklist
Before trial, ask:
- How will each document be authenticated?
- Do I need a witness?
- Do I have certifications?
- What objections might arise?
The Role of Stipulations (Revisited)
Whenever possible:
- Seek agreement on authenticity
- Narrow the issues
But always have a backup plan.
What Judges Look For
Judges want:
- Reliability
- clarity
- proper foundation
If your presentation is organized and supported, you gain credibility.
Final Thoughts
Authentication is not just a technical requirement—it is a strategic advantage.
A well-prepared case:
- Anticipates objections
- Builds a strong foundation
- Presents evidence clearly
In Lemon Law trials, the documents tell the story.
Authentication ensures that story is heard.
