Spray painting a car is an affordable way to update the appearance of your car without going to a car repair shop. However, the result directly depends on the correct selection of paint. An error in choosing a shade, type of base or varnish can lead to visible transitions, peeling or incompatibility with the factory finish. In this article, we will look at how to avoid common mistakes: from deciphering the color code to selecting accompanying materials.

Cans of car enamel differ not only in color, but also in composition: acrylic, alkyd, nitro enamels - each type has its own characteristics of application and durability. In addition, it is important to take into account the material of the part (metal, plastic, fiberglass), since they require different primers and adhesive layers. We will analyze each stage in detail: from finding the original paint code to testing compatibility with varnish.

1. How to determine the original car paint code

The color code is a unique shade identifier that the manufacturer assigns to each exterior color. It can consist of letters, numbers or a combination of both (for example, B54 for Toyota, LA5W for Honda). You can find it in several places:

  • 📄 Body plate - usually located on the driver's door pillar, under the hood or in the trunk. Look for inscriptions like Color Code, Paint or Farbe.
  • 🔧 Documentation — in the service book or warranty card (section with technical data).
  • 🔍 Online services - by VIN code (for example, on PaintScratch or Autocolorlibrary).

If the label is erased or missing, use color scanner (for example, Nix Pro or ColorMuse). These devices read the color from the body and display the closest analogues from the database. The accuracy of such devices is up to 95%, but for metallics and pearls it is better to double-check the result on a small area.

⚠️ Attention: The paint code may differ even for the same model depending on the year of manufacture. For example, Volkswagen Golf 2015 and 2020 in color Pure White have different pigments: LA9W and 0Q0Q accordingly.
📊Where do you usually look for paint codes?
On the body plate
In documents
By VIN online
I ask the dealer

2. Types of car enamels in cans: what to choose for your case

All paints in spray cans are divided into three main types by composition. Their choice depends on the budget, operating conditions and part material:

Paint type Features Pros Cons Brand example
Acrylic Water-soluble or in organic solvents. Requires varnishing. Environmentally friendly, UV resistant, wide selection of colors. They take longer to dry and are sensitive to humidity when painting. Mobihel, Dupli-Color
Alkyd Quick-drying, form a durable film without varnish. Low price, easy application. Less resistant to chemicals, they fade over time. Kudo, Body
Nitro enamels Based on nitrocellulose. Used for temporary repairs. Instant drying, easy polishing. They are short-lived and require frequent updating. Colomix, App

For metal parts (hood, wings) acrylic paints followed by varnishing are optimal - they retain their shine longer. For plastic elements (bumper, mirrors) choose enamels marked Flexible or Plastic Primerto avoid cracks. Alkyd paints are suitable for budget repairs, but they should not be used in areas exposed to reagents (for example, thresholds).

💡

If you are painting the bumper, first apply an adhesive primer for plastic (for example, Plastic Primer from Dupli-Color). Without it, the paint will peel off in 2-3 months.

3. Color selection: how to avoid a visible transition

Even knowing the paint code, you can run into discrepancies in shades. Reasons:

  • 🌍 Regional differences - the same code may differ for European, Asian and US markets (for example, B54 at Toyota Japan is lighter than the EU).
  • ⏳ Burnout — the original paint on the body loses up to 15% of its saturation over 5–7 years.
  • 🔬 Pigment type — metallics and pearls are more difficult to choose due to the “chameleon” effect (color changes under different lighting).

To minimize the risk of mismatch:

  1. Order test can (volume 100–150 ml) and apply paint to masking tape glued to the body. Compare in daylight.
  2. Use corrective pigments (for example, Mixol from Mobihel) for precise shade adjustment.
  3. For metallics, choose a paint marked Basecoat — it requires mandatory varnishing, but gives a deeper color.
⚠️ Attention: Paints with mother-of-pearl effect (Pearl) are applied in 2–3 layers with intermediate drying for 10–15 minutes. If you apply too thick a layer at once, the pigment will “sink” and the color will be dull.
How to check paint compatibility with varnish?

Apply paint to the test surface, let dry for 24 hours, then varnish. If bubbles or wrinkles do not appear after a day, the combination is suitable.

4. Compatibility with part material: metal vs plastic

Paint that is ideal for metal may peel off on plastic—and vice versa. Let's figure out what is needed for each material:

For metal parts (hood, fenders, doors):

  • 🛠️ Anti-corrosion treatment is required - remove rust, apply Epoxy primer (for example, Body 960).
  • 🎨 Paint - acrylic or alkyd with a mark For Metal.
  • ✨ Varnish - two-component (for example, Mobihel 2K Clear) for durability.

For plastic parts (bumper, spoiler, mirrors):

  • 🧴 Degreasing - use Anti-Silicone (for example, APP Plastic Cleaner).
  • 🔗 Soil - adhesive for plastic (for example, Dupli-Color Plastic Primer).
  • 🎨 Paint - with a note Flexible or For Plastic (for example, Kudo Plastic Paint).

Critical mistake: applying conventional auto enamel to plastic without primer leads to peeling after 1–2 months due to the difference in the coefficient of thermal expansion of the materials.

☑️ Preparing a plastic part for painting

Done: 0 / 4

5. Top 5 brands of spray paint: comparison and reviews

The quality of the final result depends 70% on the choice of brand. We analyzed reviews from car owners and experts (data for 2023–2026) and compiled a rating:

Brand Best Episode Average price (400 ml) Pros Cons
Mobihel Helios Basecoat 1 200–1 500 ₽ Exact color matching, UV resistant. Requires varnish.
Dupli-Color Perfect Match 900–1 100 ₽ Fast drying, good adhesion. Limited palette for rare colors.
Kudo Color Up 700–900 ₽ Low price, suitable for beginners. Less resistant to chips.
Body Acrylic 960 1 000–1 300 ₽ Good coverage, suitable for metallics. Takes longer to dry (up to 48 hours).
Colomix Premium 1 400–1 800 ₽ Professional quality, wide range. High price, difficult to find in stores.

For budget renovation (scratches, chips) suitable Kudo or Body. If needed long-term protection (full painting of the element), choose Mobihel or Dupli-Color with obligatory varnishing. For restoration of rare flowers (for example, BMW Individual) order paint from official dealers or Colomix.

💡

Saving on varnish is more expensive: without it, acrylic paint will fade after 1-2 seasons, and alkyd paint will crack due to temperature changes.

6. Step-by-step instructions: how to spray paint without streaks

Painting technology affects the result no less than the choice of paint. Follow the algorithm:

  1. Surface preparation:
    • 🧽 Clean the part from dirt and grease (White spirit or Anti-Silicone).
    • 📏 Fill the dents (if any) and sand them with sandpaper P800–P1200.
    • 🖌️ Apply primer (for metal - Epoxy, for plastic - Adhesive).
  2. Painting:
    • 🌡️ Air temperature: 18–25°C, humidity up to 60%.
    • 🎨 Apply paint from a distance 20–25 cm thin layers (2-3 layers with intermediate drying for 10-15 minutes).
    • 🔄 Mandatory for metallics and pearls varnish (applied 30–60 minutes after the last coat of paint).
  • Final processing:
    • ⏳ Drying: 24 hours at room temperature or 2-3 hours at 60°C (using an IR heater).
    • 🔍 Polishing (after 3-5 days) to remove shagreen.
    ⚠️ Attention: If you are painting a part partially (for example, a wing), use transition solvent (for example, Blender from Mobihel) to smooth out the boundaries between old and new paint. It is applied after the last layer of varnish.

    7. Common mistakes and how to avoid them

    Even experienced craftsmen sometimes make mistakes. Here are the most common mistakes and how to prevent them:

    • 💦 Too thick layer of paint → leads to smudges and prolonged drying. Solution: Apply thin layers at 10-15 minute intervals.
    • 🌬️ Painting in high humidity → dullness appears (“orange peel effect”). Solution: Use a dehumidifier or move the work to the garage.
    • ☀️ Drying in direct sunlight → the paint bubbles. Solution: Dry in the shade or under a lamp with IR spectrum.
    • 🔧 Ignoring primer → the paint peels off after a few months. Solution: For metal - Epoxy primer, for plastic - Adhesive.

    If a mistake has already been made, it can be corrected by sanding the problem area and repainting. To remove smudges, use abrasive paste (for example, 3M Rubbing Compound) and polishing.

    8. Frequently asked questions

    Can I spray paint over old paint without sanding?

    It is possible, but only if the old coating does not peel off and does not have deep scratches. Before painting, be sure to degrease the surface and apply adhesion primer (for example, Dupli-Color Adhesion Promoter). Without primer, new paint lasts a maximum of 3–6 months.

    How many cans do you need to paint a bumper?

    To completely paint the middle bumper you will need:

    • 1 can soil (400 ml),
    • 2–3 cans paints (400 ml each),
    • 1–2 cans varnish (depending on the number of layers).
    Note: For metallics and pearlescents, paint consumption increases by 30–40%.
    How to store unused spray paint?

    To prevent the paint from drying out:

    1. Turn the can upside down and press the spray nozzle for 2-3 seconds to clean the nozzle.
    2. Store upright at temperature 10–25°C.
    3. Use within 12 months from the date of manufacture (indicated on the bottom of the container).
    Important: If the paint becomes thick, thin it thinner for nitro paints (no more than 10% of volume).
    What is the difference between paint for metal and plastic?

    Plastic paints contain plasticizers, which make the coating elastic and prevent cracking when the part is deformed. Metal paints are tougher and contain anti-corrosion additives. If you apply metallic paint to plastic, it will crack at the first frost or shock.

    Do you need to polish spray paint?

    Polishing is not necessary, but is recommended for:

    • Removing shagreen (small irregularities after painting),
    • Increased shine (especially in metallics and pearls),
    • Additional protection against UV rays.
    Advice: Use abrasive paste (for example, 3M Finesse-it) and a soft polishing machine at low speed (800–1200 rpm).