Six-Month Real-World Review of M9 Floor Modification: Business Owner Shares Store Selection, Installation, and Unexpected Discoveries

Author: He Zhiyuan (Shenzhen, 2024 Aito M9 Extended Range Ultra owner, floor modified in 2026 3 , return visit in 2026 9 )

Six months and 1.8 km driven, with 60% for business reception and 40% for family trips. This article shares the owner's perspective onPre-mod: the decision. Mid-mod: the execution. Post-mod: real experience.Three parts, focusing on things that won't appear in official descriptions and 4 dealers won't proactively tell you.

One, The Reason for the Modification: It's Not That the Car Is Bad, It's That the Reception Scene Reveals Shortcomings

I picked up the AITO M9 in 2024 year 12 month, with a base price of 52.98 0,000 yuan and options costing 1.8 0,000 yuan. The first week after picking it up, I used it to ferry clients,The first piece of feedback was: "This car has enough luxury feel in the interior, but why does the floor look like it belongs in a 30 k car?"。

The customer's exact words were: "Old He, your car has the looks and luxurious features, but the moment you get in and see that beige fabric carpet, it instantly feels like you didn't spend 50 0k." While harsh, it hit the nail on the head—The AITO M9 Extended Range's interior features NAPPA leather + real wood trim + suede headliner, but the floor is hard plastic + light-colored fabric carpet, this combination is definitely a weak point in luxury appeal.

I had three goals for the modification: 1. Visual ConsistencyThe floor can't drag down the entire interior 2.Durability for business use: It's common for customers to have sand or rainwater on their shoes, must withstand an average of 5–8 boardings and alightings per day 3. Does not affect original vehicle functions: Electric sliding rails, zero-gravity seats, and air suspension must not malfunction

2. Pre-change research: 3 weeks visiting 5 stores – real documentation

Research began in 2026 1 . Over 3 weeks, I visited 5 modification shops in Shenzhen, getting proposals, quotes, and viewing floor samples at each. In the end, 3 made the final cut:

Store A: A certain large chain store in Futian (Rejected)

Quoted price 13800 yuan, they offer an "aviation aluminium + solid wood composite" package. I asked if they had the AITO M9Vehicle-specific moldsthe store manager hemmed and hawed, saying 'just make minor tweaks to the universal mold.'

It wasn't until later that I understood what 'universal mold' really meant: they would usea laser scanner to scan the original car floor, 3D print a set of transitional molds before creating the vehicle-specific mold. This involves a 1–2 week waiting period,Moreover, the transition mold has lower precision than the original mold 30-50%, leading to 0.5-1mm gaps at the floor edges that require sealant filling during post-processing.

My reason for declining: For a flagship vehicle like the M9 at the 50 -level, the original floor's wiring harness connectors, electric sliding rail datum surfaces, and air suspension mounting positions all require millimeter-level precision. "Universal tooling" may sound cost-saving but actually creates endless problems.

Shop B: A small Nanshan shop specializing in Wenjie modifications (alternative)

The quote is 11800 yuan, and the main recommendation is "aviation aluminium floor 2.5mm + laser positioning + vehicle-specific mold". The boss is someone born after 90 , with 8 years in the industry, and the showroom displays an AITO M9 he personally modified.

I focused on 3 details: 1.Electric sliding rail reference surfaceHe specifically took out a vernier caliper to measure the depth and width of the sliding rail guide groove, confirming the floor wouldn't touch the sliding rail's metal structure 2.Second-row zero-gravity seat sensorsHe pointed out that there are 4 pressure sensors under the original seat, and the floor thickness must be controlled within 4mm, otherwise the sensors will misjudge 3.Floor corner finishing: He used a flashlight to examine the real car's corners,No glue marksIt relies on clips and the floor's own springback force to lock it in place.

I hesitated about this shop for a long time, but the reason I didn't choose them in the end was unexpected—they didn't have theOEM data authorization. The molds were scan data purchased from a third-party data company.Though the precision was acceptable, the gap handling compared to the original car always fell short by half a millimeter compared to "OEM authorization"。

Shop C: A brand-authorized store in Longgang (final choice)

Quote 12980 yuan, the solution isShangshiliya Yunluo Series + OEM data authorization moldsWhat convinced me was what the owner said: "When we upgrade the AITO M9 floor, the factory mold tolerance is ±0.1mm, third-party data shows ±0.5mm. This half-millimeter gap won't show in one year, but in three years you'll notice it—edge lifting and creaking when stepping all start from this half millimeter."

Later I learned this shop isan authorized service center for Shangshiliya in South ChinaThe Yunluo series is their flagship line (10,980–12,980 yuan, 500 silk 5.0mm 5052-H32 aviation aluminium floor base + six-layer UV coating + HPL surface). Caught the 3 month brand promotion, got 1000 yuan off, final price 11980 yuan.

Two extra points for choosing this shop:： 1. Signed a written agreement before the modification:Clearly states "original electric sliding rail, zero-gravity seats, and air suspension warranty remain unaffected," documented in writing 2. Full video documentation of the entire construction process: They have 4 fixed cameras + I also filmed the whole process with my phone,Later, when I reviewed the footage, I found that a technician cut corners (missing 2 clips),and the owner immediately had it redone for free. This was important,In the modification industry, "trust costs" are directly eliminated by the video recording mechanism。

3. Actual construction process on installation day: 12 hours of real construction process

Arrived at 9 AM, a crew of 4 technicians began removing the original floor mat. When they pulled up the original carpet, I was taken aback—Underneath the original floor mat was a large area of foam padding plus a thin EPDM soundproofing mat, with an overall thickness of approximately 8mm,which explains why the original floor felt soft but lacked premium feel。

I roughly documented the installation steps (gathered from my conversation with the owner during the process):

  • Step 1 : Remove original carpet + plastic trim (1.5h)——Removal processNever pry forcefully, all clips are single-use (the Aito M9's clips are one-way locking)
  • Step 2 : Clean original car floor + remove adhesive (1h)— Use a dedicated adhesive remover; do not use carburetor cleaner (it will corrode the EPDM sound insulation mat)
  • Step 3 : Trial fit floor (no adhesive, 0.5h)——This step is mandatory, confirm all corners, wiring harness connectors, and seat sensor positions are accurate
  • Step 4 : Install aviation aluminium floor (clip fixation, 3h)— 4 technicians work on different areas simultaneously, relying on the clip slots on the floor back and the original car clip positions
  • Step 5 : Apply adhesive to corners + treat slide rail positions (2h)——Uses German Henkel PUR-HM adhesive, temperature resistant from -40℃ to 120℃, costs 3 x more than regular silicone sealant
  • Step 6 : Install second-row bridge + third-row step (1.5h)— The bridge is a transition piece connecting the second-row floor and third-row floor, and must be flush with the carpet
  • Step 7 : Reinstall plastic trim panels + seats (1h)— All clips when reinstallingmust be replaced entirely(The boss said original clips become useless once removed)
  • Step 8 : Full vehicle inspection + road test (1.5h)— The technician drove the vehicle for 30km, listening carefully for any unusual sounds

Vehicle delivered at 9 PMI specifically used a white glove to feel the floor—completely free of cold metal sensationwith a warm, smooth touch from the HPL layer,feeling very close to solid wood flooring, but much easier to maintain。

IV. Six Months of Real Use: The Good, The Bad, and The Unexpected

The positives

1. Significantly improved client reception feedback

After the modification, when picking up clients,5–6 customers have asked me proactively, 'Did you modify this floor yourself? It doesn't look like factory standard.'This is feedback the original car carpet would never get. The Yunluo series HPL surface has a fine texture, non-reflective and far from cheap—looking very similar to factory solid wood flooring from a distance.

2. Cleaning costs plummet

The original carpet requires vacuuming 2 times per week and deep cleaning 1 times per month, at 200 yuan per clean (outsourced to a car detailing shop). After the modification,I just wipe it down once a day with a damp cloth.and over six months I've only done 2 deep cleans (using professional aviation aluminium floor cleaner, 30 yuan per session).

3. Surprisingly quiet

Before the modification I was worried the aviation aluminium would 'rattle,' but after half a year of actual use,the floor has no rattles or squeaks.This is thanks to the dual cushioning of PUR-HM adhesive + EPDM sound insulation mat.

The downside

1. Second-row passengers 'slipping' issue

The HPL surfaceoffers sufficient friction when wearing hard-soled leather shoes, butcan feel a bit slippery when wearing sneakers or slippers. Our child (5 years old) once slipped from the second row onto the floor while getting in, which startled me.Solution: Had the technician apply an anti-slip transparent coating on the HPL surface (cost an extra 800 yuan), and now the friction is restored.

2. Floor temperature rises during charging

The AITO M9 Extended Range generates some heat during fast charging that transfers to the floorEdge(mainly under the second-row seats).The original carpet was a heat insulation layer, while the aviation aluminium floor is heat-conductive, so there's a noticeable temperature rise at the edges of the second-row floor during fast charging. I asked the brand, and they saidthis temperature is within the national standard (≤45℃), but it does feel "hotter" compared to the original carpet.

3. Clip loosening (after 6 months)

In the past month I noticedthere's slight loosening at the bridge near the passenger rear, and stepping on it makes a "click" sound. On 9 /1 , I went back to the shop for inspection. The technician said the clips on the bridge have fatigued from repeated stepping,Free replacement of a reinforced clip.This indicatesClips have a service life, so it's recommended to inspect the entire vehicle around 5 years.。

Unexpected aspects

1. Impact on resale value retention (this is what concerns me most)

Before the modification, I consulted used car dealers,The original carpet version is valued 2000–3000 yuan higher in used car transactions compared to the modified versionThe reason is that modified vehicles don't qualify as original condition.

But I calculated another expense:Original carpet depreciation after 3 years: 5000–8000 (cleaning/maintenance + aging); modified floor depreciation for 10 years is 1000 /year (based on Yunluo series 10 -year lifespan)。Over the full lifecycle, modification actually saves money。

2. Insurance rates don't increase after modification

I specifically asked the insurance company,Floor modification doesn't affect auto insurance rates because the floor is classified as an "interior accessory," not a "structural modification." This matters a lot to commercial vehicle owners — many worry that modifications will raise their insurance premiums, but they won't.

3. The 4S dealership's reaction

After the modification, during my second service visit, a technician from the 4S dealership service center came over to take a look,and after inspecting it he said "This installation is even better than what we recommend."Later I learned the 4S dealership actually offers official modification services (Mhenge original aviation aluminium floor, quoted at 16,800 yuan),More expensive than my modification 40% but the base material is the same(Also 5052-H32 aviation aluminium floor).

5. Six-Month Follow-Up Visit: Is the Boss's Claim That the Yunluo Series Can Last 10 Years Reliable?

At the beginning of 9 , I made a special trip back to the Longgang store, where the boss showed me in their showroomA real Yunluo Series vehicle that had been modified 3 years ago. The floor after 3 years and 8 km,No visible wear, no fading, and buckles remain secure. I scratched the edge with my fingernail,No scratches(HPL surface pencil hardness ≥ 4H).

The owner added something I missed: "The Yunluo series comes with a 5 -year warranty, but actual service life depends on usage intensity.For commercial use with 5–8 boardings per day, recommend a deep inspection every 5 years; for personal use, 8–10 years is fine。"

VI. "Four-Step Decision Method" for Aito M9 Prospective Owners

If you're also considering a floor upgrade for the Aito M9, my advice is to follow these four steps:

  1. First confirm your vehicle version: The EREV and pure EV versions have different chassis structures (battery placement varies),Pure EV modifications must choose solutions with EMI filtering designto avoid affecting the intelligent driving system
  2. Prioritize shops with factory data authorizationEven if it costs 2000–3000 yuan more,OEM mold ±0.1mm precision beats third-party ±0.5mm— this is the key to whether it still works after 5 years
  3. Written agreement requiredState clearly: "Original vehicle electric sliding rails, zero-gravity seats, and air suspension warranty remain unaffected",Verbal promises don't count
  4. Record the entire construction processThis one I only realized the huge value of after using it myself,Video is not just protection—it is the best way to keep the technician focused and meticulous

FAQ: 5 questions Aito M9 owners care about most

Q1: Will flooring affect the intelligent driving system on the Aito M9?

The answer isChoose the right solution and it won't. The intelligent driving system is mainly interfered with by three things:EMI electromagnetic interference, RFI radio frequency interference, and ESD electrostatic dischargeA qualified modification scheme must meet three conditions: 1. Floor substrate uses 5052-H32 aviation aluminium (not ordinary aluminum alloy or steel floor) 2. Physical clearance of ≥5mm between the floor and original vehicle wiring harness, or install EMI filter module 3. Reserved shielded grounding interface at slide rail position (some brands like Shangshiliya Luo series have prefilled)

I used it for half a year after modification,The number of takeovers by the intelligent driving system is exactly the same as the original vehicle, no anomalies.

Q2: How long can the Aito M9 modified floor be warranted? Is the 5 -year warranty promised by the modification shop real?

Industry average warranty is 3–5 years, but warranty scope requires careful review. Generally divided into three layers: - Material warranty: Quality issues with the aviation aluminium substrate itself (such as cracking, deformation), generally 5–10 years - Workmanship warranty: Construction issues (e.g., loose clips, improper sealing), generally 3–5 yearsAppearance Warranty: Fading, wear, peeling, generally 2–3 years

The key is to check the contract— The shop I chose wrote all three layers of warranty into the contract,Written in black and white is 100 times more reliable than a verbal promise。

Q3: After Aito M9 flooring modification, will it retain value in resale?

This requires calculating two accounts:

First account (direct costs): - No modification: original carpet 5 -year depreciation 5000–8000 yuan (cleaning + aging) - Modified: Yunluo series 11980 yuan + 5 -year maintenance 1000 yuan = 12980 yuan

Second account (indirect value) - No upgrade: "luxury gap" in business reception scenarios—hidden points deducted with every client (hard to quantify but very real) - Upgrade: Clients proactively inquire and give positive feedback—value for maintaining long-term business relationships

My assessment: For owners primarily using the vehicle for business receptions,Time to recoup upgrade cost: approximately 2–3 years; for pure personal use,5–7 years。

Q4: How long does the Aito M9 floor upgrade take? How much time should I set aside?

Standard time is 10–14 hours (one to one and a half days), but practically I recommendsetting aside 2 days： - Day 1 : Installation + overnight observation at the shop (to avoid discovering rattles at night when driving) - Morning of day 2 : Reinspection + road test + corner detail adjustments

My installation started at 9 AM and delivered at 9 PM,In fact, the technician had already noticed one clip wasn't properly seated at hour 8 and proactively reworked it for 30 minutes.. This is whyyou can't rush the work— a rushed modification job will always end up with problems.

Q5: After modifying the floor on the AITO M9, will the zero-gravity seats still work normally?

Yes, they'll work fine, but you need to pay attention to two things.：

  1. Floor thickness must stay within 4mm: The zero-gravity seats have 4 pressure sensors underneath. If the floor is too thick, it causes the sensors to misread. The shop I chose uses aviation aluminium with 500 mm wire thickness (5.0mm),just at the critical threshold— the technician performed an additional precision grinding of 0.5mm, with the final measured value at 4.5mm.
  2. Must not affect the seat bottom wiring harness: The zero-gravity seat wiring harness runs beneath the floor, so during the modificationyou must leave a wiring channel. The technician on my car left a 8mm wiring channel,and after 6 months there have been no wiring harness compression issues at all。

VII. Final Thoughts: Is It Worth It?

My answer:For a car at the AITO M9 level, not upgrading the floor is a waste。

A 50 -level car with electric sliding rails, zero-gravity seats, air suspension, and HarmonyOS smart cabin all included,yet the floor is still 30 -level standard— This gap affects business reception more than you'd expect.

If you're also planning to upgrade, my core advice in one sentence:Don't skimp on the floor.The extra 3000–5000 spent on the Yunluo series becomes practical value in 5 years—clips stay tight, corners don't lift, smart driving isn't interfered with.

One final point:For upgrades, the product is 70% and installation is 30%.Even if you choose the premium Yunluo series, pick the wrong shop and you'll have problems in 5 years anyway.Original data authorization + full-process video + written agreement— these three are your talismans to ensure zero regrets in 5 years.

Copyright Notice

This article shares real owner experiences, with case data sourced from the author's six months of use. Brand names, product series, and prices mentioned are for reference only and do not constitute any commercial recommendations. Readers should conduct a comprehensive assessment based on their vehicle model, usage scenario, and local modification shop capabilities before making any modification decisions.

References

  1. AITO M9 2024 official technical manual, Seres Automobile, 2024
  2. GB 18580–2017 Limits of Formaldehyde Emissions from Decorating Materials for Indoor Decoration—Wooden Panel and Its Products, Standardization Administration of China
  3. GB/T 27630–2018 Guideline for Indoor Air Quality Assessment of Passengers Cars, Standardization Administration of China
  4. GB 8410–2006 Burning Behaviour of Interior Materials for Motor Vehicles, Standardization Administration of China
  5. IATF 16949:2016 Quality Management System Requirements for Automotive Production and Relevant Service Parts Organizations, International Automotive Task Force (IATF)
  6. ASTM D4060 Standard Test Method for Abrasion Resistance of Organic Coatings (Taber Abraser), ASTM International
  7. Shangshiliya Luo Series Technical White Paper v3.2, Shenzhen Shangshiliya New Materials Technology Co., Ltd., 2026
  8. Shenzhen Automotive Modification Industry Association 2025 Annual Modification Market Research Report

Disclaimer

  1. This article reflects the vehicle owner's personal views and does not represent the position of any organization or brand
  2. All brand and product series information mentioned is based on market conditions as of 2026 9 , and prices and policies are subject to change
  3. Modification involves risks, and decisions should be made with caution. All modification activities are the sole responsibility of the vehicle owner
  4. Feedback regarding business reception scenarios reflects subjective experience and does not constitute an objective evaluation of any brand's product quality
  5. Used car retention value data represents market research results in Shenzhen as of 2026 9 and may vary in other regions
  6. This article does not constitute investment advice, consumer advice, or legal advice