Ever wondered why cars from Mombasa show signs of rust faster than those from Nairobi, Kisumu or even Eldoret?
If you’ve spent time around car dealers or mechanics, you’ve probably heard this phrase before:
“Hii gari ni ya Mombasa… imeanza kurust.”
It’s not just a stereotype. Cars in Mombasa truly are more prone to rust — and the science (and salty air) back it up.
Let’s explore why that happens, how serious it is and what you can do to protect your vehicle if you live by the coast.
The Main Culprit: Salt in the Air
Mombasa is right along the Indian Ocean. That beautiful coastal breeze? It carries tiny salt particles in the air. When these particles settle on a car’s surface — especially the underbody and metal parts — they speed up corrosion.
Salt is like a slow poison to metal. It attracts moisture and when combined with oxygen it leads to oxidation — what we commonly call rust.
High Humidity Makes It Worse
Mombasa’s humidity ranges from 70% to over 90% all year round. That means the air is always moist — the perfect condition for rust to develop.
In Nairobi the air is much drier especially during the dry seasons so metal parts stay relatively moisture free for longer.
A 2016 Toyota Fielder owned in Mombasa started developing rust under the chassis within two years. A similar Fielder in Nairobi, same year, same mileage, remained rust free for over four years.
Imported Cars Often Start With Surface Rust
Most second hand cars in Kenya come through Mombasa Port. While waiting for clearance, inspection or transportation they often sit exposed in salty air and coastal rain for weeks — sometimes even months.
That’s why many imported cars already show early signs of corrosion by the time they are transported inland.
What Rust Really Does to Your Car
Rust isn’t just a cosmetic issue. If ignored it can:
- Eat away at brake lines and fuel pipes
- Weaken suspension and chassis parts
- Damage body panels and doors
- Lower your car’s resale value
- Make your car fail inspection tests (yes NTSA can flag cars with excessive rust)
- Which Car Parts Are Most Affected in Mombasa?
Here’s a quick rundown of parts most vulnerable to rust in coastal towns:
Which Car Parts Are Most Affected in Mombasa?
Here’s a quick rundown of parts most vulnerable to rust in coastal towns:
| Car Part | Why It’s at Risk |
|---|---|
| Chassis/Underbody | Constant road spray and salty air |
| Brake Discs | Moisture exposure, especially overnight |
| Wheel Arches | Road grime mixed with salty water |
| Exhaust System | Heat + salt = fast corrosion |
| Door Hinges | Small spots where water collects |
How to Protect Your Car from Rust in Mombasa
The good news? Rust can be prevented — or at least slowed down. Here’s how:
1. Underseal Treatment
Apply a protective rubberized coating on the underbody to protect metal parts from moisture and salt.
Tip: Get underseal service done at reputable garages in Mombasa like AutoXpress or regional Toyota service centers.
2. Frequent Washing (Especially Underneath)
Wash the car regularly especially the underbody to remove salt buildup. Avoid using salty borehole water which can worsen rusting.
3. Wax Your Car Often
Wax is a barrier between paint and salty air. Monthly waxing helps a lot.
4. Use Anti-Rust Sprays
Spray anti-corrosion sprays on joints, hinges and exposed metal. WD-40 is common and works.
5. Garage Parking
If possible, park in a covered or enclosed garage. Don’t leave your car exposed to sea breeze especially overnight.
Should You Avoid Buying Cars From Mombasa?
Not necessarily.
A car from Mombasa isn’t bad by default. But you should:
- Inspect the car carefully for rust signs
- Ask for service history (Was undersealing done?)
- Check under wheel arches, bolts and engine bay for discoloration or rough patches
Pro Tip: Use a flashlight and a magnet during inspection. Rusted metal may look bubbly or flaky and lose magnetic strength in extreme cases.
So Why Is This Info Important?
Many buyers across Kenya avoid “Mombasa cars” purely based on rust fears. But the truth is rust prevention and maintenance matter more than location. A car can rust in Nairobi too — especially if it’s neglected or used on muddy roads with little cleaning.
Knowing what causes rust and how to deal with it can help you:
- Extend your car’s lifespan
- Avoid costly repairs later
- Get better resale value
- Make smarter buying decisions
Stay Ahead of the Rust
Living in Mombasa comes with amazing views, beach life and year round sunshine — but it also means more car maintenance.
So if you’re buying or driving in the coastal region, rust proofing isn’t optional — it’s essential. Think of it like sunscreen for your car