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The moment you step on the accelerator, it vibrates with a “boom” and “rattle”, and at the same time it feels like you can’t move forward.
It is a symptom that is often consulted in VW cars, and the cause can be on the engine side, mission side, or suspension side.
In particular, vibration during acceleration is often a “failure that only occurs when a load is applied”, and if left unattended, it can lead to inability to drive or serious failure.
In this article, we will organize the reasons for vibration when accelerating by structure, and explain in an easy-to-understand manner which ones are dangerous and where to suspect.
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- Common symptoms
- There are four main causes (by structure)
- Cause (1): Lack of ignition and fuel system power (most common cause)
- Cause (2): Drive shaft (CV joint) rottling and wear
- Cause (3): Deterioration of engine mounts
- Cause (4) 😀 SG clutch slippage and poor connection
- Points that can be checked in DIY
- Is it okay to drive? (Urgency)
- Approximate repair cost
- Related parts to check at the same time
- Conclusion
- Defect details by vehicle type
- Frequently Asked Questions (FAQs)
Common symptoms
- Boom and rattle
- The car does not move forward when accelerating
- If you step on it above a certain level, it will shake even more.
- Especially felt at low to medium speeds
- Symptoms worsen on slopes
- Idling is often not a problem
There are four main causes (by structure)
- Lack of ignition and fuel system power (misfire)
- Drive shaft and CV joint rattling and wear
- Deterioration of engine mounts
- DSG clutch slippage and poor connection
Cause (1): Lack of ignition and fuel system power (most common cause)
When does it happen?
- The moment you step on it, it shakes with a “boom”
- Rotation varies
- worse on humid days
Why do I have that symptom?
When accelerating, fuel and sparks are needed at once. When
the following parts are weakened, the “rhythm of the explosion is disturbed” → the car body shakes.
- Plug wear
- Coil weakness
- Fuel pump deterioration
- Poor spraying of the injector
It is a vibration caused by the so-called misfire.
What happens if left unattended?
- Lack of power in the entire acceleration range
- Check engine on
- Risk of catalytic damage
- Eventually the engine starts difficult
Cause (2): Drive shaft (CV joint) rottling and wear
When does it happen?
- It comes out well with front-wheel drive
- Rattling from start to low acceleration
- Further vibration when turning the steering wheel
Why do I have that symptom?
The drive shaft is the shaft that transmits the driving force of the engine to the tires. When the
joint is worn, the force cannot be transmitted evenly, and every time it accelerates,
- Ton Ton
- Clattering
- Bulbul
It is called cyclic shaking occurs.
What happens if left unattended?
- Worsening of abnormal noise
- Worst joint damage → Imdrivability (dangerous)
- Steering wheel shake at high speeds
Cause (3): Deterioration of engine mounts
When does it happen?
- The moment you step on it, the car body shakes
- Acceleration and deceleration change the way you shake
- Idling is relatively quiet
Why do I have that symptom?
The engine is fixed with rubber mounts.
When the rubber deteriorates,
- Engine movement → Vibration transmission directly to the car body
- Increased shaking under acceleration load
It will be a state.
What happens if left unattended?
- Further increased vibration
- Load on the mission side
- Damage to peripheral parts
Cause (4) 😀 SG clutch slippage and poor connection
When does it happen?
- Vibration at the start of acceleration
- Only rotation goes up first
- Shakes every time you change gears
Why do I have that symptom?
DSG says that if the clutch connection is unstable,
- Power is cut off
- It shakes at the moment of connection
“Don’t come forward + vibration” is more likely to occur at the same time.
This is a common symptom with DQ200 (dry type).
What happens if left unattended?
- Judder aggravation
- Clutch replacement required
- Worst, unable to drive
There are three options
In such a case, there are three realistic options for VW owners:
(1) First, a mechanic who is strong in diagnosis and estimation of
imported cars will identify the cause and propose the minimum necessary.
▶ Find a VW repair shop (buv.LABO)
(2) Foreign car specialty for appraisal
maintenance history and external parts plus assessment before high-cost repairs.
▶ Free appraisal with foreign car baton
(3) “New car at a fixed price” to avoid repair cost risk Relieve
yourself from breakdown stress with a monthly fee including vehicle inspection, tax, and maintenance.
One point
Even if you think it’s okay because you can run, you’re actually holding a bomb that you don’t know when it will explode.
The sooner you move, the less cost and damage you will have.
Points that can be checked in DIY
- Is idling stable?
- Does it get worse only on humid days (ignition system tips)
- Is the creep force weak (DSG clutch)
- Boot tear (drive shaft)
- Check MisFi account on OBD2
*Vibration during acceleration is difficult to make DIY judgments because multiple causes are involved.
Is it okay to drive? (Urgency)
- Can be run for a while: light ignition unevenness, small mount deterioration
- Risk of worsening symptoms: Drive shaft wear
- Driving NG (towing recommended): If strong shaking/inability to accelerate/rotation does not follow.
When a driving problem occurs, it may be necessary to tow the truck depending on the situation.
In these cases, it may be covered by road assistance or riders of automobile insurance, so it is safe to lightly review the contents of your current contract.
If you may not have a proper understanding of the coverage, you can use a comparison service to check the coverage details and premiums of multiple companies at once. Since you can get a complete picture in a short time, many people use it for repairs and inspections.
👉 Free Car Insurance Bulk Quote Service
Approximate repair cost
| Work Description | Approximate cost |
|---|---|
| Plug and coil replacement | 15,000 to 35,000 yen |
| Fuel filter replacement | 5,000 to 12,000 yen |
| Drive shaft replacement | 40,000 to 90,000 yen |
| Driveshaft Boot Replacement | 12,000 to 25,000 yen |
| Engine mount replacement | 25,000 to 50,000 yen |
| DSG Learning Value Reset | 5,000 to 12,000 yen |
| Diagnosis fee | 5,000 to 10,000 yen |
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*Early diagnosis of vibration during acceleration is the most cost-effective.
👉Summary of maintenance and custom costs & working days of VW specialty store Nile Plus
Related parts to check at the same time
- Plug Coil
- Fuel Filter
- Drive Shaft/CV Joint
- Engine Mount
- DSG Clutch Learning Values
- Intake system (boost leakage)
▼Articles on the causes, costs, and effects of breakdowns and maintenance▼
Conclusion
There are four main causes of vibration when accelerating: ignition and fuel misfire, drive shaft rattling, mount deterioration, and DSG connection failure.
Vibration that occurs only at the moment of loading is a precursor to a serious failure, and in some cases, it may lead to the inability to drive if left unattended. Even if you have mild symptoms, you can rest assured that you will have an early inspection.
Even if the symptoms are similar, the causes vary from vehicle to vehicle.
Even if there are similar abnormal noises and malfunctions, there are various causes such as turbo belts and sensors.
If you are unsure, it is safe to have it inspected at a maintenance shop without overdoing it.
Defect details by vehicle type
Although the “way of getting out” the defect is similar, “which model has many problems” is slightly different for each car model.
Trends by vehicle model and common breakdown cases among other owners are summarized on the following page.
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Frequently Asked Questions (FAQs)
Q1. Is it okay to leave vibration during acceleration?
No, it is dangerous to leave it unattended. Even a slight ignition unevenness can make it impossible to drive if it gets worse, and if it is caused by the driveshaft or DSG, it can lead to sudden failure. Early inspection is safe.
Q2. Why does idle normal but only vibrate with acceleration?
When accelerating, the fuel, ignition, and drive system are loaded at once, so weakened parts are exposed at once. It is a feature that many of the failures of “symptoms only appear under load” such as misfire, drive shaft wear, and clutch failure.
Q3. What are the risks of driving with vibration?
Catalyst damage (ignition failure), inability to drive due to joint damage (drive shaft), clutch burn (DSG), etc., all of which can lead to costly repairs.
Q4. Are there any points I can check myself?
You can check whether the boot is torn (driveshaft), whether it gets worse only on humid days (ignition system tip), creep force (DSG), and the number of misfires with OBD2. However, it is difficult to isolate the cause.
Q5. How much should I pay for repairs?
If it is a minor ignition problem, it is about 15,000 to 35,000 yen. The driveshaft costs 4-90,000 yen, the mount costs 2.5-50,000 yen, and the DSG-related is around 10,000 yen for adjustment, and it is even more expensive if it is worn. The earlier the diagnosis, the lower the cost.
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