In this brief article we are going to discuss the different Škoda Octavia Rear Suspension issues, what the causes are, and how these issues can be effectively dealt with.
What are the common suspension issues in an Škoda Octavia?
The most common Škoda Octavia suspension issues that occur are failures in the following parts:
- Rear Spring Breakage
- Rear Shock-absorbers
- Rear Trailing arm bush failure
- Rear Anti-roll bar Bush failure
What suspension does the Škoda Octavia have?
The Škoda Octavia’s first two generations were based on the Volkswagen Group A platform. Other cars sharing this platform are: Audi TT, Volkswagen Golf, Volkswagen Caddy, Volkswagen
Touran, SEAT León, SEAT Toledo, and Škoda Octavia.
The Škoda Octavia’ third-generation was based on the Volkswagen Group’ Restructured MQB platform.
The Rear Suspension of the Škoda Octavia is of independent 4 – link type, consisting of a Trailing arm, Upper Link, Lower Link and Toe Link
Rear Spring breakage
- You would notice a sudden drop in suspension height on any one side. This can be easily verified by measuring the wheel center height from any reference on the body like the Fender edge.
- Rattling, Squeaking, Creaking noises while driving which are louder when driving over a Bump
Troubleshooting Rear Spring Breakage
- In a majority of cases, the spring fails due to the combined effects of corrosion & fatigue over a period of time.
- The service life of the spring depends on whether the car is used over roads that have salt or in an atmosphere where there is a lot of moisture.
- For replacing the Spring from a strut, you need to first compress the Spring in a spring compressor. You can either use a hydraulic compressor (preferred) or a Threaded Bolt type as well
Rear Shock Absorber Failure
- Knocking and Popping Noises from the Rear going over bumps
- Rear end feels bouncier
Troubleshooting Rear Shock Failure
- The Bouncy Ride symptom points to the Shock Absorber as a probable cause.
- The noises coming from the rear are partly due to the failed shock absorber allowing the bump stops to contact more often. And also the noises partly come from the worn out shock mounting bushes that allow the shock to move and hit against the mounting brackets.
- If your vehicle has crossed 60K miles, then it could be due for a shock replacement. Due to long-term internal wear, the shock starts losing its damping action over time.
- If the rear shock has started leaking oil due to a failed oil-seal, then it means that the shock will no longer be effective.
- One good way to tell if your shock has failed or not is to do a “Bounce Test”. Put all your weight on one of the front corners of the vehicle pushing it downwards. Keep oscillating the corner till you feel that it has reached its maximum height. Once you take your hands off the corner, observe how it settles. If it takes more than 2 oscillations to settle, that means the damper has failed.
- The Top Mount of the rear shock absorber is Bolted onto the top of the shock absorber. You will need a bench vise to hold the shock and remove the Top Nut so that the top mount comes apart.
- While fitting a new shock absorber, always, Tighten the Top mounting bolts first and then the Lower mounting bolt.
- Also make sure that while tightening the Shock bottom bolt, the Wheel Hub is supported at its normal ride height. For this you can either use Blocks, a screwjack or a jack stand.
- If the shock bottom mounting bush is tightened at any other ride height, then when the car is lowered to normal ride height, the Bush will rest in a twisted condition and will have a reduced Bush service life.
Rear Trailing arm bush failure
- The car seems to roll more
- Poor handling while Lane Changing
- Uneven Tire Wear pattern
- Knocking Noises while going over Rough Patches
- Normally seen in the Second Generation 1Z cars
- Due to a Tire wear issue, it can be inferred that the alignment of the rear suspension is outside of the recommended settings. But this is still a symptom.
- The cause for alignment change points to the Rear suspension Control arm Bushings that may have got worn or damaged
Troubleshooting Rear Trailing Arm Bush Failure
- The Rear Control Arm bushings wear out over time and crack due to age
- To assess the bushing condition, you can use a Pry-bar and insert it between the Each of the Rear suspension control arms and the rear Subframe. Now, try to move the Lower Control arm using the Pry-bar and observe the movement at the Bush location. If the lower control arm moves without much force, then it means that the bushes have worn out.
- When inspecting the Rear Trailing arm after removal, it is clear that there are tears and cracks in the rubber portion.
- The Rear Trailing arm’s bushing is bolted to the frame via a removable bracket
- The Bushing is Press-fitted onto the trailing arm and therefore can be replaced only along with the whole trailing arm
Anti Roll Bar D-Bush Failure / Dryness
- Squeak Noises while driving
- Noise is more apparent when going over a rough patch
Troubleshooting Anti Roll Bar D-Bush Failure
- Squeaks and Creaks generally relate to metallic Spring elements within the suspension, namely, the Coil Spring and the Anti-Roll Bar
- If the noise is more apparent on a rough road one could be more suspicious of the Anti Roll Bar
- In order to confirm this, you can try to articulate the Anti-roll Bar after removing the Drop-link ball joint on one side. (This will require an additional hydraulic jack)
- If you hear the Creaking Noise, then it’s confirmed that the Anti-roll bar was indeed the issue.
- When you rotate the Anti Roll Bar, it does so on the support of a D-Bush Rubber (or Polymer) Bearing that connects the the Anti-roll bar to the Chassis frame
- The Anti roll bar metal rod rotates within this bush and rubs itself on the inner surface of the bushing. This causes considerable friction or wear.
- If this D-Bush is of harder Polymer-based material then it requires lubrication. There are Anti-roll bar mounting grease products available in the market which you could use.
- Or you could refer to the manufacturer’s Service Instructions to see if there is a particular product recommended
In this brief article we have discussed the different Škoda Octavia Rear Suspension issues, what the causes are, and how these issues could be effectively dealt with.
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