Car/Vehicle Maintenance
How to Know If a Car Is Roadworthy

Owning or operating a vehicle involves more than just knowing how to drive, it’s important to assess whether a car is Roadworthy or in a safe and drivable condition.
Whether you’re inspecting a used car for purchase, checking a vehicle after a breakdown, or simply ensuring that your daily driver is roadworthy, knowing the signs that a car is drivable is crucial.
This guide covers the key aspects you should evaluate to determine whether a car is fit to be on the road.
1. Tire Condition and Pressure
The tires are your car’s direct connection to the road, and their condition can greatly impact safety and drivability.
- Tread Depth: Tires should have adequate tread depth (usually at least 1.6mm or 2/32 inches). Use a tread depth gauge or the penny test (insert a penny into the tread grooves; if Lincoln’s head is visible, the tread is too low).
- Uneven Wear: Check for uneven wear, which may indicate alignment issues, suspension problems, or improper tire pressure.
- Tire Pressure: Ensure the tires are inflated to the manufacturer’s recommended pressure (usually listed inside the driver’s side door frame). Both overinflated and underinflated tires can reduce handling and increase the risk of a blowout.
- Sidewall Damage: Check for cracks, bulges, or cuts in the sidewalls, which could lead to a blowout.
2. Engine Health
The engine is the heart of your car. Even if a car starts, certain issues could render it undrivable over time.
- Fluid Levels: Check the engine oil, coolant, brake fluid, transmission fluid, and power steering fluid. Low or dirty fluids can indicate leaks or potential mechanical failures.
- Odd Noises: Listen for unusual noises like knocking, grinding, or squealing. These can indicate serious engine problems such as worn bearings, low oil pressure, or failing belts.
- Engine Light: If the check engine light is on, use an OBD-II scanner to read any trouble codes. Some issues may be minor, but others could indicate major engine problems that affect drivability.
3. Braking System
The brakes are arguably the most critical component of your car’s safety systems. A car may start and run, but if it can’t stop effectively, it is not drivable.
- Brake Response: The car should stop quickly and evenly when the brakes are applied. Any delay or extended stopping distance is a red flag.
- Brake Pedal Feel: A firm, responsive brake pedal is important. A spongy or soft brake pedal could indicate air in the brake lines or leaking brake fluid, both of which need immediate attention.
- Brake Fluid: Low brake fluid levels may indicate a leak or worn-out brake pads. Ensure the fluid is topped up and free from contaminants.
- Noises: Squealing, grinding, or clicking noises when braking can indicate worn-out brake pads or rotors, both of which must be replaced for the car to be safely drivable.
4. Suspension and Alignment
The suspension system maintains the car’s stability and comfort, while proper alignment ensures it handles correctly.
- Ride Quality: If the car feels excessively bumpy or leans when turning, there may be issues with the suspension system, such as worn-out shocks or struts.
- Alignment: A car that pulls to one side or requires constant steering correction is likely misaligned. This not only causes uneven tire wear but also reduces control, making the car unsafe.
- Unusual Sounds: Clunking or creaking noises, especially when going over bumps, could indicate problems with the suspension components.
5. Steering and Alignment
The steering system allows the driver to control the direction of the vehicle, making it vital for safe driving.
- Steering Response: The steering wheel should respond promptly and smoothly when turned. If it feels loose, stiff, or makes clunking noises, there may be issues with the power steering system, tie rods, or ball joints.
- Alignment: If the car pulls to one side while driving on a straight road, it likely needs an alignment. Misaligned wheels can lead to uneven tire wear and poor handling, making the car harder to control.
6. Suspension and Shock Absorbers
The suspension system ensures a smooth ride and maintains vehicle stability. Problems here can make driving uncomfortable or even dangerous.
- Bouncy Ride: Excessive bouncing or swaying after hitting a bump suggests that the shocks or struts are worn out. This affects the car’s ability to handle well, especially during sharp turns or emergency stops.
- Suspension Noises: Listen for any clunking or rattling sounds from underneath the car. This could point to worn suspension components like control arms, bushings, or ball joints.
7. Lights and Electrical Systems
Functioning lights and electrical systems are essential for visibility and communication on the road.
- Headlights, Brake Lights, and Turn Signals: All exterior lights should be in working order. This ensures you can see the road ahead and that other drivers can see and anticipate your movements. Replacing bulbs or fuses is often a simple fix.
- Dashboard Warnings: Pay attention to any warning lights on the dashboard. Oil pressure, battery charge, and ABS system warnings can indicate significant problems that need to be addressed before driving.
8. Battery Health
A weak or dying battery can leave you stranded and is a critical part of assessing drivability.
- Battery Charge: Use a multimeter to test the battery voltage. A fully charged battery should read around 12.6 volts when the engine is off. If the voltage is significantly lower, the battery may need charging or replacement.
- Corrosion: Check the battery terminals for signs of corrosion. Dirty or corroded terminals can prevent the car from starting or cause electrical issues.
9. Fluid Levels
A well-maintained car requires the proper levels of several key fluids to keep everything running smoothly.
- Oil: The engine oil should be at the appropriate level and should not be dark or sludgy.
- Coolant: Make sure the radiator is filled with coolant to prevent the engine from overheating. Low coolant levels can lead to overheating and engine damage.
- Power Steering Fluid: Low or dirty power steering fluid can make steering difficult and could damage the power steering pump.
10. Exhaust System
The exhaust system expels harmful gases from the engine and reduces noise.
- Exhaust Noise: Loud noises from the exhaust system could indicate a hole or leak, which may result in increased emissions and potential fines.
- Visible Emissions: Pay attention to smoke coming from the exhaust. Black smoke can signal a fuel system problem, blue smoke suggests burning oil, and white smoke may mean there’s coolant leaking into the engine.
11. Windshield and Wipers
Visibility is essential for safe driving, and a clear, undamaged windshield plays a critical role.
- Cracks and Chips: Inspect the windshield for any cracks or chips. Larger cracks or those directly in the driver’s field of vision may require immediate repair before driving.
- Wiper Function: Test the windshield wipers to ensure they work properly. Old or damaged wipers can impair visibility during rain or snow.
A car’s drivability hinges on various systems working together harmoniously.
Regular maintenance, prompt repairs, and attention to these key areas are essential for ensuring that your vehicle is roadworthy.
If you’re unsure about the condition of your car, it’s always a good idea to consult a certified mechanic or have a professional inspection done.
Never risk driving a vehicle that shows signs of major mechanical or safety issues, as doing so could endanger your life and the lives of others on the road.
Car/Vehicle Maintenance
5 Reasons Why Your Steering Wheel Might Vibrate at Highway Speeds

You’re cruising comfortably on the Lagos-Ibadan Expressway, music on, speed steady at 100km/h then suddenly, your steering wheel begins to vibrate.
Also Read: Why Do Drivers Sleep on Steering While Driving?
At first, it feels like a mild shake, but as you accelerate, the vibration worsens, making the entire driving experience uncomfortable, even frightening.
This isn’t just a nuisance. A vibrating steering wheel can signal serious underlying problems with your car problems that could put your safety at risk if ignored. According to the Federal Road Safety Corps (FRSC), poor vehicle maintenance and mechanical faults account for nearly 10% of road crashes in Nigeria. Steering vibrations often fall into this category.
At RoadKing.ng, we believe every motorist should understand what causes these vibrations and how to fix them. Below, we break down the five most common reasons your steering wheel shakes at highway speeds and what you can do about them.
1. Unbalanced Wheels
One of the most common culprits behind steering wheel vibrations is improper wheel balancing.
- How it happens: When tires are installed or rotated without proper balancing, uneven weight distribution occurs. At higher speeds, the imbalance causes the steering wheel to shake.
- Warning signs: Vibration increases as you accelerate past 80km/h; uneven tire wear; humming or buzzing noise.
- Solution: Visit a tire service center for professional wheel balancing. A computer-assisted balancing machine ensures all four wheels carry equal weight distribution.
Pro Tip (RoadKing Standard): Always balance your wheels after tire replacement, rotation, or rim repairs.
2. Wheel Alignment Issues
Poor wheel alignment is another leading cause of vibrations.
- How it happens: Driving regularly on pothole-ridden Nigerian roads can knock your wheels out of alignment. When this happens, the steering struggles to stay centered, causing vibrations and uneven pulling.
- Warning signs: Car pulls to one side; crooked steering wheel when driving straight; rapid tire wear.
- Solution: Get a proper wheel alignment check. Many modern alignment machines use lasers for accuracy.
Pro Tip: Check alignment every 6 months or after hitting a major pothole/curb.
3. Worn Brake Rotors
If your steering wheel vibrates mainly when you brake, the problem likely comes from your brake system.
- How it happens: Over time, brake rotors can become warped due to heat, friction, or poor-quality parts. When the brake pads press against warped rotors, they cause pulsations that transfer to the steering wheel.
- Warning signs: Steering shakes only while braking; squealing or grinding noise; longer stopping distance.
- Solution: Replace or resurface the affected rotors. Always pair new rotors with quality brake pads.
Pro Tip: Avoid sudden hard braking unless necessary, it reduces heat stress on your rotors.
4. Suspension and Steering Problems
Your vehicle’s suspension system is designed to keep your wheels stable and your ride smooth. When parts wear out, they can trigger vibrations.
- How it happens: Worn tie rods, ball joints, or bushings create play in the steering system, leading to shaking at higher speeds.
- Warning signs: Excessive vibration on rough roads; clunking noises when turning; uneven steering response.
- Solution: Have a professional mechanic inspect your suspension. Replace worn components immediately to restore stability.
Pro Tip: Don’t ignore minor vibrations, they often signal suspension wear long before a major breakdown.
5. Tire Problems (Uneven Wear or Defects)
Your tires are the only part of your car that touch the road, so when something’s wrong with them, it shows up quickly in your steering.
- How it happens: Uneven tire wear, bulges, flat spots, or low-quality tires often cause steering vibrations. Nigerian roads, with their frequent potholes, speed bumps, and rough patches, make this even more common.
- Warning signs: Visible cracks, uneven tread depth, or bulging sidewalls; vibrations worsen at higher speeds.
- Solution: Rotate tires every 5,000km; replace worn or damaged tires immediately.
Pro Tip: Invest in quality tires, they last longer, perform better, and reduce steering problems.
Bonus Causes (Less Common But Serious)
- Engine or Transmission Mounts: Worn mounts transfer vibration into the steering wheel.
- Axle or Driveshaft Damage: Usually from accidents or hitting large potholes.
- Wheel Bearings: When they wear out, they create rumbling noises and vibration.
Why You Shouldn’t Ignore Steering Wheel Vibrations
A shaky steering wheel isn’t just uncomfortable, it’s dangerous. Left unchecked, it can lead to:
- Loss of control at highway speeds.
- Increased stopping distance due to faulty brakes.
- Premature wear on tires, rotors, and suspension parts.
- Costlier repairs down the line.
According to WHO’s 2022 Global Road Safety Report, mechanical issues like worn tires and brakes contribute significantly to Africa’s high road crash fatality rates. Addressing vibrations early can save lives.
RoadKing.ng Safety Checklist for Drivers
Before your next highway trip, do this quick check:
- Inspect tire pressure and tread depth.
- Ensure wheels are balanced and aligned.
- Check for brake noises or pulsations.
- Listen for clunking sounds in suspension.
- Book regular servicing, prevention is cheaper than repairs.
Conclusion
Your car is always communicating with you. A vibrating steering wheel is its way of saying something’s wrong. Whether it’s unbalanced wheels, alignment issues, worn rotors, suspension problems, or bad tires, don’t ignore it.
At RoadKing.ng, our advice is simple: fix the problem early, drive safely, and protect lives on Nigerian roads.
Car/Vehicle Maintenance
10 Car Maintenance Habits That Can Save Your Life

In Nigeria, road accidents are often blamed on bad roads, reckless drivers, or faulty vehicles. However, many motorists overlook one crucial factor, poor car maintenance habits. A vehicle is only as safe as the attention its owner gives it.
Also Read: Tire Maintenance: Essential Tips to Extend Tire Life
According to the Federal Road Safety Corps (FRSC), over 40% of road accidents in Nigeria are linked to vehicle defects such as worn-out tires, faulty brakes, and poor lighting systems. Most of these crashes could have been prevented if drivers paid attention to routine maintenance.
This article highlights 10 essential car maintenance habits every Nigerian driver must practice not just to keep their vehicle running smoothly but to protect lives on our roads.
1. Regular Tire Inspection and Replacement
Tires are the only part of a car that touches the road. Worn-out or underinflated tires can lead to blowouts, especially on highways.
- Tip: Check tire pressure weekly.
- Replace tires every 3–4 years, or sooner if you notice cracks or thinning tread.
- Always carry a spare tire in good condition.
2. Never Ignore Your Brakes
Faulty brakes are a death trap. Many drivers ignore squeaking sounds or grinding noises until it’s too late.
- Tip: Have brakes inspected every 10,000 km.
- Replace worn brake pads immediately.
- If the brake pedal feels spongy, check brake fluid levels.
3. Change Engine Oil Regularly
Engine oil lubricates moving parts and prevents overheating. Dirty or old oil increases engine wear and can cause sudden breakdowns.
- Tip: Change oil every 5,000–10,000 km depending on your car and oil type.
- Always use manufacturer-recommended oil.
4. Keep Lights and Indicators Functional
In Nigeria’s busy cities and dark highways, non-functional headlights, brake lights, or indicators are recipes for accidents.
- Tip: Check lights weekly.
- Replace dead bulbs immediately.
- Clean dirty or cloudy headlamp covers.
5. Replace Worn-out Wipers
During rainy season, poor visibility causes numerous crashes. Old or cracked wipers cannot clear water effectively.
- Tip: Replace wiper blades every 6–12 months.
- Keep washer fluid filled.
6. Monitor Battery Health
Dead batteries can leave you stranded in unsafe locations.
- Tip: Check battery terminals for corrosion.
- Replace batteries every 2–3 years.
- Always turn off lights and electricals when the car is off.
7. Don’t Overlook Suspension and Alignment
Bad suspension affects handling, while poor alignment wears tires unevenly and reduces control.
- Tip: Inspect suspension annually.
- Do wheel alignment and balancing every 5,000–10,000 km.
8. Keep Fluids at Safe Levels
Your car runs on several fluids, coolant, brake fluid, transmission fluid, and power steering fluid. Low levels can cause overheating or failure.
- Tip: Check all fluids regularly.
- Top up or replace according to manufacturer recommendations.
9. Watch Out for Warning Lights
Modern vehicles have dashboard warning indicators. Sadly, many Nigerian drivers ignore them until disaster strikes.
- Tip: Learn your dashboard symbols.
- If the check-engine light comes on, get diagnostics immediately.
10. Schedule Routine Servicing
Skipping servicing to save money is a dangerous habit. Preventive maintenance is always cheaper than repairs or hospital bills.
- Tip: Service your vehicle every 5,000–10,000 km.
- Use certified mechanics or service centers.
Why Maintenance Matters in Nigeria
Nigeria’s harsh driving environment from pothole-filled roads to heavy traffic and hot weather makes maintenance even more critical. Vehicles here face tougher conditions than in many developed countries.
FRSC data shows that drivers who perform routine maintenance are 70% less likely to be involved in preventable crashes. Maintenance is not just about protecting your car; it’s about protecting your life and the lives of other road users.
Conclusion
Your car is like your body: if neglected, it will break down at the worst possible moment. By adopting these 10 car maintenance habits, you not only extend your car’s lifespan but also save yourself from accidents, fines, and expensive repairs.
As RoadKing.ng always emphasizes: “A well-maintained car is a life-saving car.”
Car/Vehicle Maintenance
5 Signs Your Car Battery Is About to Fail

Few things are as frustrating as turning the ignition and hearing nothing but a weak click. For many Nigerian drivers, a dead battery often comes as a surprise, yet the signs of failure are usually clear weeks in advance.
Also Read: Understanding the Conditions for Replacing a Car Battery
Car batteries are the silent lifeline of every vehicle, powering ignition, headlights, wipers, and even the air-conditioning system.
In Nigeria’s hot climate, with frequent stop-and-go traffic, batteries often wear out faster than expected. Recognizing the warning signs early can save drivers from being stranded in unsafe or inconvenient places.
5 Warning Signs of Battery Trouble
1. Slow Engine Crank
If your engine takes longer than usual to start, especially in the mornings, your battery may be losing strength.
2. Dim Headlights and Flickering Electronics
Weak batteries struggle to power lights and electronics. If your headlights appear dim or dashboard lights flicker, the battery is under stress.
3. Warning Light on Dashboard
Most modern cars display a battery symbol when charging or performance issues occur. Ignoring this sign can lead to sudden breakdowns.
4. Unusual Smell (Rotten Eggs Odor)
A leaking or overheated battery may emit a sulfur smell, a clear indicator that it is failing and could pose safety risks.
5. Swollen Battery Case or Corrosion
In extreme heat, the battery casing may bulge, and corrosion on the terminals often signals poor connections and declining performance.
️Nigerian Factor: Why Batteries Fail Faster Here
Nigeria’s hot weather is a major culprit, extreme heat speeds up chemical reactions inside the battery, reducing its lifespan. Combine that with bumpy roads, frequent traffic jams, and inconsistent alternator performance, and most batteries last 18-24 months instead of the global 36-48 months average.
What Drivers Should Do
- Test Your Battery Every 6 Months: Many auto shops and fuel stations offer free battery tests.
- Replace Proactively: Don’t wait for complete failure, if your battery is over 2 years old, start monitoring closely.
- Clean Terminals: Regularly clean off corrosion to improve connections.
- Invest in Quality: While cheaper brands save money upfront, premium batteries often provide better longevity and safety.
Conclusion
Your car battery won’t fail without warning, it gives signs. Being alert to these symptoms and acting early can save drivers from costly roadside emergencies, especially on Nigeria’s highways where help may not be close by.
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