Is it necessary to apply underbody coating for Toyota Vios?
3 Answers
Toyota Vios does not require underbody coating. Underbody coating can provide rust and corrosion protection, safeguard the underbody during rainy or snowy weather, and reduce noise. Below are some relevant details about the Toyota Vios: 1. Body dimensions: The Toyota Vios is a compact 4-door, 5-seater sedan with a body length of 4435mm, width of 1700mm, height of 1490mm, and a wheelbase of 2550mm. 2. Configuration: The Toyota Vios is equipped with a 1.5L naturally aspirated engine and a 5-speed manual transmission, delivering a maximum power of 81 kW and a maximum torque of 138 Nm, with front-wheel drive. 3. Suspension: The front suspension uses a MacPherson strut independent suspension, while the rear suspension employs a torsion beam non-independent suspension.
Last month, I accompanied my friend to service his newly purchased Vios, and the mechanic specifically mentioned the undercoating. The factory rustproofing on the Toyota Vios is quite basic, especially in cities where de-icing agents are used during northeastern winters, leading to rapid undercarriage corrosion. I recommend it for those who frequently drive long distances or live in humid coastal areas—spraying can significantly reduce noise from stone impacts and provides effective rust prevention for three to five years. The price is actually very reasonable, with standard rubber-based materials costing just three to four hundred yuan. However, it’s important to choose a reputable shop for the job, and the undercarriage must be thoroughly cleaned before application to prevent coating detachment. If you mainly use the car for city commuting, you can simply check the undercarriage condition during annual maintenance, and skipping it for now is not a big issue.
My Vios has been running for over six years, and I kinda regret not getting undercoating when I first bought it. After driving on mountain roads a few times during the winter two years ago, the paint chipped by gravel on the undercarriage started rusting. Personally, I think the most practical function of undercoating is rust prevention, especially during the southern rainy season when the underbody stays damp for long periods. During application, I recommend choosing epoxy resin material with a thickness of at least 4mm, focusing on protecting areas around the fuel tank and exhaust pipe. But be sure to find a professional shop - a friend got it done at a roadside stall and it started bubbling and peeling within three months. If you mainly drive on paved roads, the factory rustproof coating should last three to five years, just remember to rinse the undercarriage during regular car washes.
