Free Practice Questions for CAP Peintre Automobile

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Key Facts: CAP Peintre Automobile Exam

10/20

Minimum passing grade required overall and in the professional domain

Éduscol — Le certificat d'aptitude professionnelle (CAP)

0 €

Official exam registration fee via Cyclades

Ministère de l'Éducation nationale

Niveau 3

National qualification level under RNCP and EQF

France Compétences (RNCP37540)

HVLP & RP

Standard high-efficiency low-emission spray gun technologies mandated in French paint booths

Référentiel CAP Peintre automobile

12 weeks

Mandatory period of workplace training (PFMP) for the CAP Peintre automobile

Annexe V, arrêté du 30 décembre 2022

The CAP Peintre automobile (RNCP37540, arrêté du 30 décembre 2022, first session 2025) is France's national vocational qualification for automotive painters and refinishers, replacing the former CAP Peinture en carrosserie. Certified by the Ministry of Education with free registration on Cyclades, it is assessed by two practical units — EP1 (coefficient 5, 3 h) and EP2 (coefficient 10, 4 h) — and graduation requires an overall 10/20 average plus at least 10/20 across the professional units. This OpenExamPrep bank features 100 English-language practice MCQs structured around substrate preparation, masking techniques, computerized color formulation, spray booth application, defect rectification, and European VOC/air-fed respirator safety.

Sample CAP Peintre Automobile Practice Questions

Try these sample questions to review concepts for the CAP Peintre Automobile exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1When cleaning a damaged steel fender before sanding and filler application, what is the correct procedure for the 'two-rag method' (méthode des deux chiffons) using a solvent-based degreaser (dégraissant solvanté)?

A.Spray degreaser generously across the whole panel and allow it to air-dry completely before wiping with a microfiber towel.

B.Apply the degreaser with one clean cloth to dissolve contaminants, and immediately wipe the dissolved residue off with a second clean, dry cloth before evaporation.

C.Dip a single cloth in solvent, vigorously scrub the entire surface, and blow dry the remaining solvent using compressed air.

D.Apply degreaser with a Scotch-Brite pad, rinse thoroughly with high-pressure tap water, and wipe down with tack cloths.

Explanation: In professional automotive refinishing, degreasing requires the two-cloth method: the first cloth applies the degreaser to dissolve oils, waxes, and silicones, while the second clean, dry cloth immediately removes the dissolved impurities before the solvent evaporates. If the solvent is allowed to dry on the panel, contaminants remain redeposited on the surface, causing severe adhesion loss or fisheyes.

2What is the standard mixing ratio by weight for conventional 2K polyester body filler (mastic polyester universel) with its benzoyl peroxide paste hardener (durcisseur peroxyde de benzoyle)?

A.100 parts filler to 10 parts hardener (10% hardener by weight).

B.50 parts filler to 50 parts hardener (1:1 equal ratio by volume).

C.100 parts filler to 2 parts hardener (approximately 2% hardener by weight).

D.100 parts filler to 0.2 parts hardener (0.2% hardener by weight).

Explanation: Standard 2K polyester body fillers require an exact hardener ratio of 1% to 3% (nominally 2% by weight, or a small pea-sized bead of red peroxide paste for a golf-ball-sized portion of putty). Accurately respecting this 100:2 ratio ensures complete polymerization without leaving unreacted peroxide or uncured resin.

3What is the primary technical objective of applying dry guide coat powder (poudre de guidage) over cured primer surfacer (apprêt garnissant) prior to block sanding?

A.To highlight surface imperfections, pinholes, low spots, and coarse sanding scratches so the technician knows exactly when the panel is flat.

B.To provide an extra protective barrier that seals the porous primer against moisture penetration during wet sanding.

C.To chemically neutralize acidic residues remaining in the primer film after flash-off and curing.

D.To act as a dry lubricant that prevents sanding paper from loading up with primer dust.

Explanation: A dry guide coat (poudre de guidage noire ou blanche) deposits a contrasting micro-powder into surface valleys, sanding grooves, and pinholes. As the painter sands with a flat block, high spots clear first while recessed low spots retain the dark powder, providing an unambiguous visual indicator of panel flatness and scratch removal.

4An unpainted replacement bumper cover bears the molded recycling identification mark '>PP/EPDM<'. What substrate family does this automotive component belong to?

A.Thermosetting polyurethane reaction injection molding (PUR-RIM).

B.Sheet molding compound glass-fiber composite (SMC).

C.Rigid thermoplastic polycarbonate / acrylonitrile butadiene styrene blend (PC/ABS).

D.Thermoplastic polyolefin elastomer blend (polypropylene / ethylene propylene diene monomer).

Explanation: The marking '>PP/EPDM<' denotes a thermoplastic olefin blend composed of polypropylene modified with ethylene propylene diene monomer rubber. This flexible polyolefin material is the standard plastic used for modern car bumpers due to impact resistance, but possesses very low surface tension, requiring specialized cleaning and plastic adhesion primers.

5According to the FEPA (Federation of European Producers of Abrasives) P-grade standard, which abrasive grit sequence is recommended for the initial rough shaping of cured polyester body filler on bare steel?

A.P400 followed directly by P800.

B.P80 followed by P120.

C.P240 followed by P500.

D.P1000 followed by P2000.

Explanation: Initial flattening and rough shaping of cured polyester putty requires coarse abrasives such as FEPA P80 to cut down ridges rapidly, followed by P120 to refine the profile. Finer grits like P240 and P320 are then used to step out scratches before primer application.

6What is the primary function of a 2K wash primer (primaire phosphatant acidifié / réactif) applied in a thin translucent coat onto bare steel and aluminum?

A.To chemically passivate the bare metal surface and provide active corrosion inhibition through phosphoric acid and zinc chromate/phosphate conversion.

B.To build a thick 150-micron barrier layer that fills deep hammer marks and heavy grinding scratches.

C.To create a glossy decorative finish that serves as a non-sanding final topcoat.

D.To insulate the body panel thermally against the high baking temperatures of the spray booth.

Explanation: A 2K wash primer (primaire phosphatant) contains phosphoric acid and polyvinyl butyral resin. When applied in a thin coat (10-15 microns) onto bare steel or aluminum, the acid etches the surface and forms a microscopic phosphate conversion layer that pacifies the metal against corrosion and delivers superior chemical adhesion.

7When preparing an unprimed raw polypropylene (PP) plastic part for refinishing, what essential undercoat must be applied before spraying an acrylic primer surfacer?

A.A heavy coat of anti-gravel underbody pitch (revêtement antigravillonnage).

B.A coat of etch wash primer containing phosphoric acid.

C.A dedicated plastic adhesion promoter (primaire d'accrochage pour plastiques).

D.A single-stage alkyd synthetic enamel.

Explanation: Raw polyolefin plastics like polypropylene have extremely low surface polarity, which causes standard acrylic or polyurethane paints to peel off. A 1K or 2K plastic adhesion promoter (primaire d'accrochage plastique, often based on chlorinated polyolefins) modifies the interfacial tension and anchors tenaciously to the plastic substrate.

8What is the primary role of a 2K high-build acrylic primer surfacer (apprêt garnissant 2K) in automotive paint preparation?

A.To protect the structural steel chassis members from stone-chip damage with rubberized elastomers.

B.To isolate featheredged old paint layers, fill sanding micro-scratches (P240-P320), and provide a uniform substrate for topcoat sanding.

C.To tint the vehicle basecoat directly without applying a colored basecoat.

D.To chemically clean grease and wax from the bare metal substrate during application.

Explanation: A 2K high-build primer surfacer (apprêt garnissant) provides substantial film thickness (80-150 microns) to level out minor sanding striations and isolate underlying repair materials (putty, bare metal, featheredged factory paint). Once cured and block-sanded, it yields a smooth, uniform surface that prevents solvent strike-in and edge mapping.

9When feathering out (chanfreinage / dégradé des couches) the damaged paint layers around a repair area on a car door, what is the best practice to prevent noticeable step edges (marches d'escalier) and mapping (détourage)?

A.Use a grinder with a 36-grit disc held at a 45-degree angle directly over the transition zone.

B.Sand only the body filler with P80, leaving the original clearcoat completely untreated.

C.Mask off the perimeter tightly with masking tape to create a razor-sharp painted edge.

D.Progressively bevel the original paint layers outward using a gradual abrasive sequence (e.g., P180, P240, P320) with a wide, soft taper.

Explanation: Feathering (chanfreinage) involves creating a wide, gradual transition zone between the bare metal, primer, basecoat, and factory clearcoat. By stepping down grits progressively (e.g., P180 to P240 then P320) across a bevel width of 3 to 5 cm, the sharp edges of paint layers are eliminated, preventing solvent lifting or contour ring visibility (détourage) in the final finish.

10Why is thermal flame treatment (flammage de surface) sometimes utilized in the automotive bodyshop when preparing untreated raw polypropylene (PP) plastic parts?

A.To oxidize the non-polar surface and introduce polar oxygen-containing groups (hydroxyl and carbonyl), dramatically increasing surface energy.

B.To melt the outer plastic layer completely into a smooth glass-like skin that eliminates the need for primer.

C.To bake out deep structural oil additives and permanently harden the flexible polypropylene matrix.

D.To burn away all surface dust particles without requiring mechanical washing or degreasing.

Explanation: Polypropylene is a non-polar hydrocarbon with very low surface tension (typically under 30 mN/m), causing liquid coatings to bead up rather than wet out. Passing an oxidizing gas flame briefly across the surface oxidizes surface chains, generating polar functional groups (such as -OH and -COOH) that raise surface energy to >42 mN/m, enabling paint wettability and adhesion.

About the CAP Peintre Automobile Exam

The CAP Peintre automobile (which replaced the former CAP Peinture en carrosserie, created by the arrêté du 30 décembre 2022, RNCP37540, first examination session 2025) is France's state qualification for automotive refinishing technicians and spray painters. Regulated by the Ministère de l'Éducation nationale, the certificate verifies expertise in surface preparation, substrate cleaning and degreasing, plastic repair priming, polyester filling, spray gun configuration (HVLP/RP), colorimetry and spectrophotometer shade matching, waterborne basecoat application, two-component (2K) clearcoat finishing, infrared curing, defect rectification (polishing/denibbing), and European VOC environmental and respiratory safety compliance. The official examination is conducted in French through workshop practical tests. OpenExamPrep provides a 100-question English-language MCQ study adaptation of that syllabus — not an official translation, and not a simulation of the practical examination format.

Exam sponsor: Ministère de l'Éducation nationale et de la Jeunesse (administered locally by Académies). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Two professional units defined by the arrêté du 30 décembre 2022: EP1 Intervention et réparation sur élément (unit UP1, coefficient 5, ponctuel pratique, 3 h) and EP2 Préparation et application des peintures (unit UP2, coefficient 10, ponctuel pratique et oral, 4 h). One coefficient point within EP2 is awarded for the chef-d'œuvre for scolaires and apprentis. General units are EG1 Français-histoire-géographie-enseignement moral et civique (coef 3), EG2 Mathématiques et physique-chimie (coef 2), EG3 Éducation physique et sportive (coef 1) and EG4 Prévention-santé-environnement (coef 1), unless exempted by a prior French secondary credential.

Time Limit

7 hours of professional practical assessment (EP1 3 h + EP2 4 h) plus general-education units (EG1 2 h 25, EG2 1 h 30, EG4 1 h)

Passing Score

10/20 overall weighted average, and at least 10/20 across the professional units

Exam / Certification Fees

Free (0 € examination fee for national Cyclades public candidate registrations)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

25 of 100 questions

Surface Preparation & Undercoats

Cleaning, degreasing, guide coats, progressive sanding grits (P80 to P500), polyester body filler application, 2K high-build primers, wash primers, and plastic adhesion promoters

20 of 100 questions

Masking & Corrosion Protection

Masking foam edge tape, electrostatic vehicle masking film, paper masking, door jamb protection, anti-gravel underbody coatings, and wax injection into hollow frame sections

20 of 100 questions

Colorimetry & Paint Formulation

Color theory (hue, saturation, brightness), color variant decks, spectrophotometer angle readings, paint mixing scales, tinting corrections, and test spray-out card verification

20 of 100 questions

Spray Gun Setup & Paint Application

HVLP and RP spray gun adjustments (fluid volume, fan pattern, air cap pressure), paint viscosity (DIN cup), waterborne basecoat flash-off, and 2K polyurethane clearcoat spraying

15 of 100 questions

Paint Defect Rectification, Safety & VOC Compliance

Troubleshooting paint defects (orange peel, runs, solvent popping, fisheyes, clouding), denibbing and rotary polishing, VOC threshold limits, and air-fed breathing respirators

Preparing for the CAP Peintre Automobile Exam

What You Need to Know

Passing score: 10/20 overall weighted average, and at least 10/20 across the professional units
Assessment: Two professional units defined by the arrêté du 30 décembre 2022: EP1 Intervention et réparation sur élément (unit UP1, coefficient 5, ponctuel pratique, 3 h) and EP2 Préparation et application des peintures (unit UP2, coefficient 10, ponctuel pratique et oral, 4 h). One coefficient point within EP2 is awarded for the chef-d'œuvre for scolaires and apprentis. General units are EG1 Français-histoire-géographie-enseignement moral et civique (coef 3), EG2 Mathématiques et physique-chimie (coef 2), EG3 Éducation physique et sportive (coef 1) and EG4 Prévention-santé-environnement (coef 1), unless exempted by a prior French secondary credential.
Time limit: 7 hours of professional practical assessment (EP1 3 h + EP2 4 h) plus general-education units (EG1 2 h 25, EG2 1 h 30, EG4 1 h)
Exam / certification fees: Free (0 € examination fee for national Cyclades public candidate registrations) Official sources

Using Our Practice Resources

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CAP Peintre Automobile: Suggested Study Strategy

1Memorize standard abrasive grit progression: remember never to skip more than two grit grades (e.g., P80 to P150, P150 to P240, P240 to P320, P320 to P400/P500) to prevent deep scratch swelling under paint.

2Understand spectrophotometer operation: wipe down the panel with anti-silicone degreaser, polish the measurement area, calibrate the device against white and black tiles, and take three angular measurements.

3Practice paint mixing calculations: determine exact hardener and thinner ratios by volume or weight using manufacturer technical data sheets (e.g., 2:1, 4:1, or 5:1 with 10-15% thinner).

4Know spray gun setup rules: verify that HVLP guns operate at approximately 2.0 bar inlet pressure to deliver a maximum of 0.7 bar (10 psi) at the air cap, maintaining a 10-15 cm distance from the panel.

5Recognize common paint defect causes: fisheyes caused by silicone or oil contamination, solvent pops caused by insufficient flash-off time before force drying, and orange peel caused by high viscosity or low air pressure.

Frequently Asked Questions

What is the CAP Peintre automobile qualification in France?

The CAP Peintre automobile, created by the arrêté du 30 décembre 2022 (RNCP37540) with a first examination session in 2025, is the French state vocational certificate for vehicle painters. It replaced the former CAP Peinture en carrosserie, which no longer appears in the ministry's list of current CAP specialities. Certified by the Ministère de l'Éducation nationale, it qualifies holders to prepare surfaces, match colours, and apply protective and decorative paint finishes in bodyshops and dealership paint departments.

How is the French CAP automotive painter exam assessed?

The exam is evaluated through two practical workshop units: EP1 Intervention et réparation sur élément (coefficient 5, 3 h, practical) covering repair, surface preparation, filling and undercoats, and EP2 Préparation et application des peintures (coefficient 10, 4 h, practical and oral) covering colour formulation, spray-out cards, and basecoat/clearcoat application in a downdraft spray booth. A minimum of 10/20 across the professional block is required to pass, alongside 10/20 overall.

What health and safety standards apply to spray painters in France?

Painters must comply with strict occupational health rules: wearing air-fed respiratory helmets or certified A2P3 half-masks during spraying to prevent isocyanate inhalation from 2K hardeners, operating in certified ventilated downdraft spray booths, adhering to European Directive 2004/42/EC on volatile organic compound (VOC) limits, and disposing of solvent waste via hazardous waste collection circuits.

Are there fees to register for the CAP painter examination?

No. Examination registration via the national Cyclades portal for public school students, apprentices, and private individual candidates (candidats libres) is free of charge across all French académies.

Why is this preparation bank written in English?

OpenExamPrep provides an English-language MCQ study adaptation of the official French Ministry of Education curriculum, allowing bilingual apprentices, international automotive technicians, and English-speaking candidates to master the technical principles, formulas, and standards required for the French qualification.