AG1 vs STEK PPF India — Why This Comparison Is Different
Most PPF brand comparisons weigh a global name against another global name, or an international brand against a domestic Indian manufacturer. AG1 vs STEK is a sharper version of that second question: a film engineered from the ground up for Indian roads, installed exclusively at one Hyderabad studio, against the brand with the single highest published tensile strength and elongation figures of any PPF Auto Grid installs, and a nano-ceramic hydrophobic top coat built into the film itself. Auto Grid installs both in Kondapur, which means this comparison isn't written to push you toward the brand with the bigger margin.
If you're weighing an India-formulated film against the spec-sheet leader on raw mechanical numbers, here's the honest, grade-for-grade breakdown.
Quick Summary — AG1 vs STEK PPF at a Glance
| Attribute | AG1 PPF | STEK DYNOshield |
|---|---|---|
| Origin | India (developed with BITS Pilani, Hyderabad) | South Korea (STEK Automotive) |
| Warranty | 8 years standard / 12 years AG1 Square | 10 years (flat, across DYNOshield/DYNOmatte/FORCESHIELD) |
| Thickness | 192µm ±10% (AG1 Square: 221µm) | 200 ± 10µm |
| Tensile / elongation | 30 MPa / 397% elongation (AG1 Square: 26.4 MPa / 396.4%) | 44.8 MPa (6,500 psi) / 450% elongation |
| Gloss (60°) | 143 GU (AG1 Square: 146.6 GU) | >80 GU |
| Self-healing | Yes — heat-activated, adhesive tested through Indian monsoon-to-summer cycling | Yes — heat-activated, standard across the range |
| Hydrophobic top coat | Optional add-on | Built in standard — HYDROphobe® nano-glass ceramic top coat |
| India-specific formulation | Purpose-engineered for Indian humidity, heat, and road dust | Global formula — tested to a controlled accelerated-aging standard, not India-specific |
| Independent certification | Not published | SGS certified across the range |
| Installer network | Exclusive to Auto Grid, Hyderabad | Growing certified-distributor network across India |
| Price tier | Mid-range | Premium |
| Best for | Indian daily drivers wanting India-tuned performance at mid pricing | Buyers who want the deepest gloss and built-in hydrophobic performance without a separate ceramic step |
The Spec Sheet Gap Is Real — STEK's Numbers Are Genuinely Higher
Unlike some brand match-ups where one side simply doesn't publish comparable data, this one is a genuine, documented gap: per STEK's own published technical data sheet, DYNOshield rates 44.8 MPa (6,500 psi) tensile strength and 450% elongation at break — both the highest figures of any PPF brand on Auto Grid's comparison table, ahead of AG1's own documented 30 MPa and 397% elongation (AG1 Square: 26.4 MPa / 396.4%). STEK also publishes a numeric gloss figure (>80 GU) and SGS third-party certification validating its stated specs, a level of independent verification AG1 doesn't currently publish.
Thickness sits close — STEK's 200 ± 10µm against AG1's 192µm (AG1 Square: 221µm) — but higher elongation matters more than a few extra microns for absorbing highway stone-chip impact without tearing. On raw published mechanical data alone, STEK is the stronger spec sheet. That doesn't automatically make it the better film for every car in Hyderabad — it makes it the better film on paper for buyers who weigh tensile and elongation numbers as the deciding factor. See our PPF thickness guide for why elongation and tensile strength matter as much as raw micron count.
The Warranty Comparison Still Favours AG1 at the Top
STEK's flat 10-year warranty beats AG1 standard's 8 years outright — no tier-shopping needed, the same term applies across DYNOshield, DYNOmatte, and FORCESHIELD. But STEK doesn't currently publish a longer-term flagship tier the way LLumar's Valor or AG1's own Square variant does. AG1 Square's reinforced film carries a 12-year limited warranty — two years longer than STEK's ceiling, and the longest fixed term in this specific two-brand comparison. Compared directly: if you're choosing AG1's base tier, STEK's 10 years wins. If you step up to AG1 Square, AG1 wins the warranty question outright.
STEK DYNOshield — The Gloss-First Film With Hydrophobic Built In
STEK is a South Korean PPF manufacturer that has grown into one of the top global PPF brands, with research and manufacturing hubs spanning Korea and the USA and a rapidly expanding India distributor network. DYNOshield, the flagship film, is built around one specific, well-documented differentiator: a HYDROphobe® nano-glass ceramic top coat bonded into the film during manufacturing, rather than added afterward as a separate ceramic layer. Per STEK's own technical data sheet, this top coat delivers extreme water-repellent performance, extreme high-gloss optical clarity, and anti-contaminant, non-yellowing resistance — all as standard, out-of-the-box properties of the film itself.
Mechanically, DYNOshield measures 200 ± 10 microns, rated at 6,500 psi (44.8 MPa) tensile strength with 450% elongation at break — figures independently verifiable across multiple regional STEK technical data sheets Auto Grid reviewed directly, all consistent with each other. The film is also tested to 1,000 hours of Xenon Arc accelerated weathering (0.51 W/m² irradiance at 340nm, 65°C, 50% relative humidity) with no documented change, and the full range carries SGS third-party certification — independent validation of STEK's stated thickness, self-healing, stain resistance, and clarity claims.
Where STEK wins
- Highest published tensile strength and elongation — 44.8 MPa / 450%, the strongest documented mechanical numbers of any brand in this comparison
- Hydrophobic top coat built in standard — no separate ceramic application needed to get water- and dirt-shedding performance
- Deepest gloss finish — widely regarded as the richest wet-look finish in the PPF category, particularly on black, navy, and dark metallic paint
- Independently certified — SGS certification validates STEK's own published spec claims, a third-party check AG1 doesn't currently publish
- 10-year flat warranty — beats AG1's standard 8-year tier outright, with no tier-shopping required
Where STEK falls short
- Not formulated for Indian climate specifically — tested to a controlled global accelerated-aging standard, not against Hyderabad's monsoon humidity cycling
- Warranty ceiling tops out at 10 years — two years short of AG1 Square's 12-year term
- India distributor and installer network is still growing, newer than AG1's single, consistent Auto Grid relationship but also newer than more established international brands' India footprint
- Premium pricing, reflecting the built-in ceramic top coat and third-party certification
AG1 PPF — Engineered Specifically for Indian Roads
AG1 takes the opposite starting point from a global brand adapting its chemistry for the Indian market: its adhesive and TPU formulation were developed in collaboration with BITS Pilani, Hyderabad, calibrated specifically for the conditions Indian cars actually face — monsoon humidity cycling, sustained panel temperatures above 65°C through South Indian summers, alkaline dust from construction corridors, and the wet-dry thermal stress that causes edge lifting in films tested primarily for drier, more temperate or standardised accelerated-aging conditions.
AG1 standard measures 192µm (7.6 mil) ±10%, rated at 30 MPa tensile strength with 397% elongation at break and a 143 GU gloss reading per its own technical data sheet. AG1 Square, the reinforced variant, measures 221µm total with a published 26.4 MPa tensile, 396.4% elongation, and 146.6 GU gloss — both AG1 tiers exceed typical industry gloss levels of 85–110 GU, even though STEK's own published gloss figure (>80 GU) sits below both. AG1 is installed exclusively at Auto Grid's Kondapur studio, meaning every install and every warranty claim runs through a single, consistent installer rather than a distributed network of varying certification quality.
Where AG1 wins
- India-specific engineering — the only film in this comparison formulated and tested against Indian climate extremes rather than a general-purpose global TPU chemistry
- Higher published gloss — 143 GU (AG1 Square: 146.6 GU) against STEK's published >80 GU, despite STEK's reputation as the category's deep-gloss specialist
- Longest warranty ceiling in this comparison — AG1 Square's 12 years beats STEK's flat 10-year term by two years
- Consistent installation quality — exclusive to one certified studio means no variance in certification standard between installers, unlike a network that is still expanding
- Mid-range pricing — positioned below STEK's premium tier
Where AG1 falls short
- Lower published tensile strength and elongation than STEK's documented 44.8 MPa / 450% — a genuine, measurable spec-sheet gap, not a marketing difference
- Hydrophobic top coat is an optional add-on rather than built into the base film the way STEK's HYDROphobe® coat is standard
- No third-party certification (SGS or equivalent) published for AG1's stated specs
- Exclusive to Auto Grid in Hyderabad — not available through other installers or other cities the way STEK's expanding distributor network is
How the Two Actually Differ on Indian Roads
- Rock chip resistance: STEK's higher tensile strength and elongation (44.8 MPa / 450%) suggest it absorbs stone-chip impact with more stretch margin before tearing than AG1's 30 MPa / 397% at a thinner 192µm gauge — a real, documented advantage on STEK's side, not a thickness illusion.
- Monsoon humidity cycling: This is AG1's specific design target — its adhesive was developed against Hyderabad's monsoon-to-summer transition. STEK's published TDS data covers a standardised Xenon Arc weathering test in detail but doesn't test specifically against Indian monsoon humidity cycling the way AG1's adhesive chemistry was developed to.
- Gloss and finish: STEK is widely regarded in the category for deep, wet-look gloss, particularly prized on dark paint — but its own published GU figure (>80) is lower than AG1's documented 143 GU (AG1 Square: 146.6 GU), a genuine discrepancy between reputation and the numbers on each brand's own data sheet worth knowing before choosing on gloss alone.
- Hydrophobic performance out of the box: STEK's nano-ceramic top coat is standard on every tier — water, bird drops, and road grime shed aggressively with zero extra step. AG1's hydrophobic coat is an optional add-on, so AG1 owners who want the same out-of-the-box water-shedding should pair it with a ceramic or graphene coating at the time of install.
- Construction dust and alkaline road grime: Common across Hyderabad's growing corridors (Kokapet, Tellapur, Financial District). AG1's base tier benefits from a ceramic or graphene layer on top for easier dust release and rinse-off, where STEK's built-in hydrophobic coat already handles a meaningful share of that on its own.
Price Positioning — Without the Guesswork
AG1 sits in the mid-range across its one standard tier plus AG1 Square, positioned as the value proposition for buyers who want India-specific engineering and the longest warranty ceiling in this comparison without premium pricing. STEK DYNOshield sits at premium pricing, comparable to XPEL, reflecting its built-in ceramic top coat, SGS certification, and the highest published mechanical spec sheet in the category. Neither brand publishes fixed rate cards publicly, and the right figure for your car depends on size, panel coverage, and which brand's installation scope you choose. Contact Auto Grid on WhatsApp — wa.me/918019388862 — for a quote tailored to your specific car and coverage choice.
Which Cars and Owners Should Choose Which
Choose STEK PPF for:
- Performance cars and dark-coloured paint where deep, wet-look gloss is a visible priority
- Owners who want hydrophobic, ceramic-grade water and dirt shedding built into the film, without adding a separate coating step or cost
- Buyers who specifically want the highest documented tensile strength and elongation figures, verified by independent SGS certification
- Cars where a flat 10-year warranty (no tier-shopping) is sufficient and the premium price point fits the budget
Choose AG1 PPF for:
- New or recently purchased daily drivers where India-specific adhesive and UV performance matters for the full warranty term
- Owners who want the longest warranty ceiling in this comparison — AG1 Square's 12 years beats STEK's 10-year flat term
- Buyers who want a documented, higher-gloss finish at mid-range pricing rather than premium pricing for STEK's built-in ceramic coat
- Cars that will be driven daily through Hyderabad's monsoon-to-summer cycle for years, where edge-lifting resistance under wet-dry stress matters most
Neither is automatically the wrong choice — they lead on genuinely different, documented strengths. If raw mechanical numbers, built-in hydrophobic performance, and third-party certification matter most, STEK's spec sheet is the strongest in this comparison. If you want a film engineered around exactly the climate and road conditions your car will actually face in Hyderabad, at a longer warranty ceiling and mid-range pricing, AG1 is the more purpose-built pick. Bring your car in for a free inspection and we'll show you sample panels of both rather than just describing them.
What About the Rest of the Field — XPEL, 3M, Garware, LLumar?
AG1 and STEK are two of six major PPF brands Auto Grid installs. If you want the full picture, read our 3M vs STEK head-to-head, our AG1 vs 3M comparison, our AG1 vs LLumar breakdown, our Garware vs AG1 comparison, our AG1 vs XPEL vs STEK breakdown, or the complete PPF brands comparison for India covering all six brands side by side.
Installation Quality Matters More Than the Brand Debate
Whichever film you choose, the installer determines how close you get to that film's full warranty life. Verify before booking, regardless of brand:
- Certification: Confirm the studio is genuinely certified for the brand, not just stocking it. AG1's exclusivity to Auto Grid means certification isn't a variable — every AG1 install runs through the same studio. For STEK, confirm the shop's specific STEK certification, not just general PPF experience.
- Dust-free studio: Film applied in a dusty bay traps particles underneath, visible as bubbles later. Ask specifically about climate control, not just "clean workshop."
- Computer-plotted templates: No hand-cutting directly on your car's paint for either brand — templates should be pre-plotted for your exact model.
- Paint correction first: Either film locks in whatever condition the paint is in underneath. Swirl marks and light scratches should be corrected before installation, not sealed in.
Auto Grid in Kondapur is the exclusive Hyderabad installer of AG1 and is also a certified STEK installer, alongside XPEL, 3M, Garware, and LLumar — all from one dust-free, climate-controlled studio. WhatsApp us your car model, colour, and how you drive it — we'll recommend honestly based on your car, not our margin.
Related: Full PPF brands comparison — XPEL, STEK, AG1, 3M, Garware, LLumar · AG1 PPF · STEK PPF India · 3M vs STEK · PPF Hyderabad