A growing owner base
Every delivery expands the audience for accessories and software.
Tokyo, Japan · Japan-spec RHD testing
Make your EV product ready to win in Japan.
I help overseas EV brands sell in Japan through Japan-spec vehicle testing, native Japanese sales copy, buyer insight, and practical launch advice.
Review the 6-page sample report before you hireKAZ’S OWN VEHICLEMODEL Y · RHD
- VEHICLE
- 2026 Model Y
- TRIM
- Premium RWD
- CABIN
- Black / 16-in
- STATUS
- Accepting inquiries
THE JAPAN GAP
A product can fit in California—and fail in Japan.
Japanese buyers trust products that read naturally, explain local fitment clearly, and feel supported. Literal or AI-only translation can signal risk before they ever evaluate the hardware.
RHD trim and Japan-spec differences rarely show up in a factory test. I combine vehicle evidence with native-market sales copy before inventory, listings, or support problems scale.
WHY JAPAN · 2026 MARKET SIGNAL
Tesla is already in Japan.
Its owner market is growing.
Model Y led foreign-car models in Japan for the first half of 2026. The next wave is what owners buy after delivery: protection, storage, charging, software, and personalization.
Owners want to personalize
Storage, protection, charging and style keep the buying journey alive.
Translation is not localization
Local fitment and buyer confidence are the final barriers.
THE AFTER-DELIVERY MARKET
Make your product a Japan favorite.
Replace guesswork with a Japan-spec vehicle, local buyer judgment, and evidence.
Plan your Japan launchWHY KAZ
Owner. Engineer.
Community insider.
I am Kaz: a native Japanese engineer, active Model Y owner, and genuine Tesla enthusiast. I personally handle the first reply, research, vehicle testing, Japanese copy, and final report. I stay close to Japanese Tesla creators, friends who customize their cars, and owners discussing what works, what disappoints, and what they want next.
Native-market judgment
Natural listing copy and FAQs.
Actual Japan-spec testing
RHD-specific differences included.
Close to owner conversations
Owner interests become product decisions.
Kaz owns the whole engagement
Direct, fast and accountable.
Community relationships inform market insight; creator introductions, coverage, or endorsements are not promised unless separately agreed.
JAPAN MARKET ADVISORY
Bring local market insight
into the room before launch.
Work with a Japan-based Model Y owner, engineer, and EV media operator to identify why buyers would purchase, hesitate, misunderstand, return, or need support.
STANDALONE SESSION$180USD
Pre-review + written consultation + 2-page action memo + one follow-up
Send the product URL and questions first. Use checkout only after Kaz confirms the scope in writing.
WRITTEN JAPAN MARKET ADVISORYNO SAMPLE REQUIRED
YOU SEND
Your product or service page, target customer, current Japan concern, and up to three priority questions.
KAZ ADVISES
Product value, buyer hesitation, real use, listing clarity, onboarding, support, return risk, and improvement priority.
YOU RECEIVE
Written answers and a two-page action memo ranked P1, P2, and P3. A scheduled real-time text chat of up to 45 minutes is available when useful.
Multi-car owner
Real ownership across several vehicle types.
Engineer
Hardware, apps and UX.
EV media operator
Buyer-facing Japanese communication.
Real-world data
Ownership data when it matters.
BOUNDARYPhysical fitment verdicts, full market research, complete translation, full listing production, and voice or video calls are not included.
PAYMENTPaid in full after questions and scope are agreed, before the session.
THE VEHICLE KAZ USES
Not a stock image. Kaz’s actual vehicle.
This black 2026 Model Y Premium RWD is Kaz’s Japan-spec test vehicle. Every project records the vehicle condition, date, photos, and measurements.
◇RHDJapan spec
▣16-INCenter display
●BLACKCabin & headliner
⌖TOKYOReal local use
All vehicle imagery above shows Kaz’s actual car. The detail view is a crop of the same owner photograph and does not represent a client test result.
WHAT YOU RECEIVE
Evidence you can act on.
No vague influencer review. Each engagement is scoped around one product decision.
Fitment verdict
A clear works / works with caveats / does not fit decision on a Japan-spec right-hand-drive vehicle.
Installation record
Step-by-step notes, friction points, measurements, and 10+ annotated photos from an actual install.
Japan market check
Natural Japanese listing copy, compatibility wording, FAQ risks, and local buyer questions you may miss.
Private English report
A concise decision-ready PDF plus a short unlisted video. Your findings stay private unless you approve publication.
SAMPLE · SELF-INITIATED
See the standard before you hire Kaz.
This first sample is an independent demonstration—not a paid client claim. It shows the evidence levels, photos, measurements, and verdict format a pilot receives.
Owner-verified Desk audit Manufacturer claim Unverified
Open the 6-page sample report SAMPLE REPORTSELF-INITIATED · NOT A CLIENT RESULT
RHD
JP
JP
PRODUCT CLASSModel Y accessory fitment check
EXAMPLE VERDICT FIELDMETHOD SHOWN
- FINDING
- EVIDENCE
- UNKNOWN
- LABELED
- NEXT CHECK
- ACTION
EVIDENCE LEVELS LABELEDSELF-INITIATED SAMPLE
ENGAGEMENTS
Clear inputs. Defined work. Decision-ready evidence.
Scope, deliverables, exclusions, and payment terms are agreed before work starts. No open-ended “full review” promises.
DESK REVIEWNo sample · listing review included
01
Japan Readiness & Listing Review
A document-based Japan-readiness check with practical supervision of one existing product page.
$250USD · 3 business days
BEST FORBest for an overseas maker or seller deciding whether a product is ready for Japan, what must be verified next, and how its listing should improve.
View exact scope, deliverables and payment＋
CLIENT PROVIDES
- One product page and the compatibility claim you want checked
- Manual, dimensions, installation video, and spec sheet if available
- Current English listing copy and your main Japan-market question
KAZ DOES
- Kaz compares your claim with a 2026 Japan-spec Model Y Premium RWD
- Checks RHD/LHD, model year, trim, dimensions, power, cable, sensor, airbag, and support gaps
- Separates official facts, manufacturer claims, owner measurements, and unknowns
- Reviews one existing product page for positioning, fitment wording, installation clarity, FAQs, and Japanese buyer concerns
CLIENT RECEIVES
- 4–6 page private English or Japanese PDF
- Verdict: likely compatible / vehicle test needed / not recommended / insufficient evidence
- Prioritized sales-page corrections and up to three sample rewrites, such as a title, benefit block, fitment note, or FAQ
- Exact measurements or evidence still needed before launch
BOUNDARYNo physical fitment claim is issued without the product. The listing review covers one existing page for one SKU, up to 1,500 source words. Full translation, complete Japanese page creation, publishing, and revision rounds are not included. This is not legal or regulatory certification.
PAYMENTScope agreed first, then 100% payment before research starts.
STRIPE CHECKOUT · AFTER WRITTEN APPROVAL
Send the product URL and materials first. Use checkout only after Kaz confirms the one-SKU, one-page scope in writing.
VEHICLE TESTPhysical sample required
02
Japan-Spec Vehicle Test
Hands-on installation and use on an actual Japan-spec right-hand-drive Model Y.
$950USD · 7–10 days after installation
BEST FORBest when you need defensible fitment evidence, installation friction, and Japan-ready listing copy.
View exact scope, deliverables and payment＋
CLIENT PROVIDES
- One physical accessory or one clearly defined app flow
- Product page, manual, expected fitment, and priority test questions
- Sample shipped to Japan after Kaz accepts the test scope
KAZ DOES
- Kaz records arrival condition, packaging, and every installation step
- Installs for up to 90 minutes and measures gaps, alignment, access, and interference
- Checks RHD-specific use, visibility, cables, rattles, sensors, airbags, and normal daily handling
- Compares real results with your claims and writes complete native-Japanese sales copy
CLIENT RECEIVES
- 8–12 page private English or Japanese report with a clear fitment verdict
- 10+ annotated photos and one short private video
- Installation findings, measurements, caveats, and failure evidence
- Complete Japanese sales page: title, full description, benefit copy, fitment and installation notes, FAQs, support answers, and one revision
BOUNDARYNo vehicle cutting, safety-system modification, high-voltage work, or specialist installation is included. A negative result is a valid paid result, not a refund condition.
PAYMENT50% to reserve the test; 50% after sample acceptance and before testing. Reservation and balance Stripe links are sent privately after scope approval. Shipping, duty, and outside costs are prepaid separately.
EXTENDED VALIDATIONCustom scope
03
Extended Validation
A longer evidence program for behavior that cannot be judged in one installation session.
From $1,500USD · Typically 14–21 days
BEST FORBest for apps, charging products, repeated-use issues, firmware behavior, or a launch decision with several test scenarios.
View exact scope, deliverables and payment＋
CLIENT PROVIDES
- Product or software access, test hypothesis, and desired decision
- Agreed scenario matrix, devices, firmware, or data requirements
- Any known issue, reproduction steps, or comparison configuration
KAZ DOES
- Kaz runs repeated use across the agreed period and conditions
- Tests install/remove cycles, day/night, parking, route, device, or software scenarios as relevant
- Logs charging, vehicle, or app data when it materially supports the decision
- Attempts issue reproduction and documents the exact conditions and limits
CLIENT RECEIVES
- Decision report with test matrix, results, limitations, and recommendation
- Private evidence set with annotated images, video, or data extracts
- Failure and reproduction log plus prioritized product or listing changes
- One review call or written revision round
BOUNDARYQuoted only after the success criteria, safety limits, schedule, and evidence format are defined. Scope varies by product.
PAYMENTMilestone payment schedule is included in the custom proposal.
MULTI-PRODUCT OPTION
Request bundle pricing Testing a product family? Bundle it.
Related products tested on the same vehicle, shipment, and schedule receive discounted bundle pricing. Shared setup, photography, and vehicle-condition work are not charged twice.
Sources labeled
Official, claimed and measured stay separate.
Vehicle & date recorded
Every finding keeps its context.
Negative results preserved
Failures remain in the report.
Private by default
Nothing is published without approval.
METHOD
Four controlled steps from question to evidence.
Kaz handles scope, research or vehicle testing, and the final report directly.
Share the decision
Send the product link, target vehicle, current claim, and the decision you need to make.
Approve scope & payment
Kaz confirms the plan, evidence, safety limits, schedule, total cost, and the correct Stripe checkout link in writing.
Research or test
After the required payment, Kaz performs the agreed desk audit or documents receipt, installation, measurement, and use of your sample.
Receive the evidence
You receive the private report and evidence set, with unknowns and limitations stated clearly.
THE OPERATOR
Owner context.
Engineer discipline.
I’m Kaz, a Japan-based engineer and EV media operator with ownership experience across hybrids, compacts, open-top sports cars, and EVs. I look beyond whether something works: would a Japanese driver buy it, understand it, keep using it, or contact support and return it?
How I use AII use AI to help build this website, organize research, and draft English. I personally make every fitment decision, inspect the vehicle, approve the Japanese sales copy, review the report, and give the final sign-off. Unverified AI output is never delivered as a finding.
Formal identity and business detailsI work publicly as Kaz. My legal operator name, full address, and telephone number are disclosed without delay on request before an application decision. Formal details are provided for contracts, invoices, and payments as required by law and the agreed transaction terms. View commercial disclosure
- Owner of the test vehicle: 2026 Japan-spec Model Y Premium RWD
- Multi-car owner: Aqua GR Sport, MINI Convertible, Solio, Copen GR Sport, and Model Y
- Native Japanese software engineer & product builder
- Direct relationships with Japanese Tesla creators and custom-focused owners
- Designing a Japan-focused Tesla custom-parts discovery platform
- Accessory import, fitment, installation & real-world data experience
FOUNDING PILOT · FIRST 3
Start with one product.
The full $950 Japan-Spec Vehicle Test is offered at $650 for the first three projects. Scope and evidence standards stay the same.
Safe scope only. No brakes, steering, suspension, high-voltage systems, or ADAS modifications. This is product testing—not regulatory certification or legal advice.
INTRODUCTORY VEHICLE TESTFIRST 3 PROJECTS
FOUNDING PRICE$650USD
- One physical accessory or defined app flow
- Japan-spec Model Y real-world test
- Private English or Japanese report
- 10+ annotated photos
- Short unlisted video
- 7–10 days after installation
Product, international shipping, duty, and specialist installation are quoted separately. After scope approval, the reservation and balance Stripe links are sent privately.
START A CONVERSATION
Show Kaz what you want
to sell in Japan.
You do not need to choose a plan first. Send the product page and the decision you need to make. Kaz will reply with a practical written scope—without pushing unnecessary work.
- Written English or Japanese is welcome
- Reply within 1–2 Japan business days
- Your product and inquiry stay private
Prefer email? lab@kurematsu.net