CarCareTruth Score
Decent.
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Prices may varyHealth score is for adult use as intended, per the manufacturer's SDS. It does not model child ingestion, accidental spill cleanup, or off-label use. See the safety panel below for full hazard classification, and /disclaimer for the full editorial scope.
GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
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The published Safety Data Sheet for this product does not specify eyes protection for consumer use.
Workplace context
29 CFR 1910.133(a)(1)
“The employer shall ensure that each affected employee uses appropriate eye or face protection when exposed to eye or face hazards from… liquid chemicals…”
Triggered by GHS H319 on the SDS.
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
The published Safety Data Sheet for this product does not specify skin protection for consumer use.
Workplace context
29 CFR 1910.138(a)
“appropriate hand protection when employees' hands are exposed to hazards such as those from… chemicals which produce an adverse effect on the skin or eyes…”
Triggered by GHS H315 on the SDS.
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
No PPE specified in published sources for lungs. Absence does not imply “not needed” — consult the full Safety Data Sheet.
No PPE specified in published sources for ventilation. Absence does not imply “not needed” — consult the full Safety Data Sheet.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
This product ranks #18 of 22 in Car Shampoo.Three above it ↓
Last reviewed May 25, 2026
TL;DR Meguiar's Ultimate Wash & Wax cleans adequately on light contamination, but the wax additive causes documented glass buildup after repeated washes and is incompatible with ceramic-coated vehicles. Carries a California Prop 65 warning. No badge.
One-step wash-and-wax: lifts road film and deposits a light wax layer in a single bucket wash (1 oz per gallon). Cleaning is adequate for lightly contaminated weekly drivers but falls short on bug residue and heavier road film. The wax additive is both the selling point and the main liability · it deposits on glass after 3·4 washes, producing windshield haze and wiper streaking documented by multiple independent sources. Not suitable for ceramic-coated vehicles; the wax deposit degrades the coating's hydrophobic properties.
Best for owners of bare or lightly waxed daily drivers who want a one-step gloss boost and are willing to clean their glass separately. Skip it if your car has a ceramic coating · not coating-compatible. Skip it if you need reliable cleaning on heavier contamination. Meguiar's Gold Class Car Wash is a cleaner all-rounder without these trade-offs.
SDS signal word: WARNING. H315 (skin irritation) and H319 (eye irritation) are concentrate-level classifications; at the 1:128 working-solution dilution both resolve · neither applies to normal use. A California Prop 65 warning is confirmed on the same G17748 formula; the specific listed substance is not identified in the SDS. Two surfactant ingredients carry aquatic toxicity flags; the drain-destined runoff pathway is a concern. No biodegradability data in SDS Section 12.
No. Forum owners consistently document that the wax additive in this product deposits on ceramic-coated surfaces and interferes with the coating's hydrophobic performance. Multiple independent sources report that the wax residue diminishes the beading behavior that ceramic coatings are chosen for. For ceramic-coated vehicles, use a wax-free maintenance shampoo that will not deposit on the coating.
Yes · this is the most consistently documented community complaint. Multiple independent forum sources report wax buildup on the windshield after 3·4 washes, leading to night-driving haze and wiper streaking. Detailers who use this product regularly recommend masking the glass during use or cleaning the windshield with a dedicated glass cleaner after each wash.
The product label (confirmed on the back-of-bottle image) calls for 1 oz per gallon · a 1:128 working-solution ratio. This is the dilution used for all health and environment scoring on this page.
Yes. A California Prop 65 warning is confirmed on ASIN B01LW19HR4 (the same G17748 48 oz formula). The current ASIN (B00QYTJKM0) is out of stock and returned minimal data; the warning is based on the older in-stock ASIN for the same product. The specific listed substance is not identified in the SDS; the likely basis is trace 1,4-dioxane from the ethoxylated surfactant fraction, consistent with the pattern seen in other Meguiar's products.
Gold Class is the better all-purpose choice for most buyers. Both carry a California Prop 65 warning. Gold Class has a higher cleaning score · forum evidence does not document the same contamination-removal limitations seen with Ultimate Wash & Wax. Gold Class does not contain a wax additive, so it avoids the glass buildup problem and is broadly compatible with ceramic-coated vehicles. Ultimate Wash & Wax is a reasonable choice only for bare paint or lightly protected vehicles where a light wax boost is the goal and glass buildup is acceptable.
The SDS does not confirm biodegradability for the product mixture · SDS Section 12 defers all ecological data to the manufacturer without providing test results. No biodegradability credit is applied. The primary surfactant ingredients are anionic types commonly described as biodegradable in the scientific literature, but a manufacturer referral alone is not the SDS-confirmation basis required for the scoring credit.
Marketing copy from Meguiar's, via Amazon. Not editorial.
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