Manual transmission 5S (or MQ250 according to internal classification Volkswagen Group) One of the most common transmissions on cars ŠKODA early to mid-2000s. It's on a model. Octavia A4/A5, Fabia the first generation, and Rapid and Roomster. Despite the simplicity of the design, this checkpoint has its own “weaknesses” that every owner should know about.

In this article we will look at 5S box, typical breakdowns and their symptoms, and also give practical recommendations on maintenance and repair. We will pay special attention to issues pick-up, backstage adjustments and fault diagnosis Anything that will help extend the life of your transmission ŠKODA.

Device and specifications of the 5S transmission (MQ250)

Box 5S belongs to the family of mechanical transmissions MQ200/MQ250developed by the concern Volkswagen for small and medium-sized cars. It represents double-shaft with synchronizers on all forward gears (except reverse). Main technical parameters:

  • 🔧 Type: mechanical, 5-speed, double-shaft
  • 📏 Maximum torque: up to 200 Nm (depending on the modification)
  • 🛢️ Oil volume: ~1.7–2.0 L (depending on model)
  • ⚙️ Gear ratios:
    • 1st gear: 3,778
    • 2nd gear: 2.093
    • 3rd gear: 1.360
    • 4th gear: 0.971
    • 5th gear: 0.756

Structurally MQ250 consists of:

  • 🔄 Primary shaft (host, clutched)
  • 🔄 Secondary shaft (driven, transmits torque to the wheels)
  • 🔧 Block gears. (including reverse gears)
  • 🎛️ Switching mechanism (stages, forks, syncs)
  • 🛡️ Carter (aluminum or magnesium alloy)

One of the key features 5S is absence of bearing on the secondary shaft from the side of the differential - a bushing is used instead. This decision reduced the cost of production, but caused many problems in the production of the plant. high-load operation or with low-quality oil.

Why is the 5S called “unkillable”?

In fact, the reputation for being “unkillable” is due to the simplicity of design and the lack of electronics. However, when aggressive driving or ignoring maintenance, the resource of the box is reduced to 150-200 thousand. km. At the same time, with careful operation and regular oil replacement, the 5S transmission easily nurses 300+ thousand. km.

Typical malfunctions of the 5S PPC: symptoms and causes

Despite the reliability, the box 5S There are a number of “diseases” that occur over time. Let’s look at the most common problems and their signs:

Malfunction Symptoms Possible reasons
Synchronizer wear Crunch when changing gears, especially on the 2nd and 3rd Aggressive switching, low oil levels, wear of brass rings
Luft of the secondary shaft Hum or vibration at speed, difficult switching on gears Wearing of the sleeve instead of bearing, deformation of the shaft
Seal leakage Oil stains under the box, lower oil levels Aging rubber, damage to anthers, high pressure in the crankcase
Bearing wear Howling noise on neutral or when moving Natural wear, lack of lubrication, ingress of moisture
Problems with the backstage Fluid shifting, spontaneous knocking of gears The looseness of the mechanism, wear of plastic bushings, improper regulation

Critical point: if a metal clang is heard when moving in 5th gear, this may indicate the destruction of the gear or bearing of the secondary shaft. Exploitation in this state leads to a jamming of the PPC!

⚠️ Attention: If after the clutch replacement there was a crunch when switching to 1st or reverse gear, most likely the problem is in the misadjustment of the clutch drive or squeezing-bearing. Don’t confuse this with the fault of the PP itself!

Maintenance of the 5S transmission: oil change and adjustment

Many owners ŠKODA It is believed that oil is in a mechanical box. change. This is wrong! Manufacturer recommends Control the oil level every 60,000. kmand complete replacements are carried out once in a 90–120 thousand km (or earlier if driving aggressively).

For PROBLIC 5S Suitable oils with classification:

  • 🛢️ API GL-4 (optimum for synchronizers)
  • 🔧 SAE 75W-90 (synthetics or semi-synthetics)
  • 🏭 Specifications VW: G 052 171 A2 or G 052 512 A2

Popular brands of oils for 5S:

  • 🔹 Liqui Moly Hochleistungs-Getriebeoil 75W-90
  • 🔹 Castrol Syntrans Transaxle 75W-90
  • 🔹 Motul Gear 300 75W-90
  • 🔹 ZIC G-FF 75W-90 (budget option)

Oil replacement process:

  1. Warm up the box (drive 5-10 km).
  2. Pour the old oil through drain plug (lower part of the crankcase).
  3. Wash the crankcase (optional if the oil is heavily contaminated).
  4. Pour new oil through filler hole (to the edge level).
  5. Check for no leaks.

Oil level (must be at the bottom edge of the filler hole)|No leaks from the glands and traffic jams|Smoothness of gear shifting (especially 2nd and 3rd)|No extraneous noise on the neutral and under load-->

Backstage adjustment 5S is required if:

  • 🔧 Transmissions are activated with effort or unclear.
  • 🔧 The lever "wanders" or has a large backlash.
  • 🔧 After the clutch or transmission has been replaced.

To adjust you will need:

  1. Reduce the curtain thrust clamping.
  2. Put the lever in position neutral (center).
  3. Adjust the thrust position so that the switching plug is in the middle position.
  4. Tighten the clamps and check the work.

Liqui Moly 75W-90|Castrol Syntrans|Motul Gear 300|ZIC G-FF|Other (write in the comments)->

5S repair: when you need and how much it costs

If the box 5S started crackleIt will probably need repairs. Let’s see where you can get by with “little blood” and when you need it. complete disassembly:

  • 🔧 Mild malfunctions:
    • Replacement of galls (from 1,500 rubles). to work.
    • Adjustment of the scene (from 1000 rubles).
    • Oil replacement (from 800 rubles). with material.
  • 🛠️ Medium malfunctions:
    • Replacement of synchronizers (from 8000 rubles). with disassembly.
    • Repair of the secondary shaft (from 10 000 rubles).
    • Replacement of bearings (from 6000 rubles).
  • 🚨 Serious breakdowns (require removal of the checkpoint):
    • Wear gears (from 15 000 rubles).
    • Deformation of the shafts (from 20 000 rubles). or replacement of the transmission.
    • Destroying the crankcase (requires a box replacement).

Cost contracted transmission 5S in good condition, from 15,000 to 30,000 rubles. (depending on model ŠKODA). The new box will cost you 50,000–80,000 rub.Therefore, repairs are often more profitable.

⚠️ Attention: If, after the replacement of the clutch, the CPC became neutralize, this may indicate miscentration or shaft-damage. Do not ignore this symptom - it leads to accelerated wear of bearings!

Signs that We need to go to the service immediately.:

  • 🔴 Box jammed (transmissions are not included).
  • 🔴 Strong metallic grinding when moving.
  • 🔴 Oil leak more than 0.5 liters per 1,000 km.
  • 🔴 Self-involved knocking out gears under load.
💡

If the 5S gearbox began to “howl” on the neutrals, this is a sign of wear of the primary or secondary shaft bearings. Operation in this state leads to the destruction of the gears and the jamming of the box.

Upgrading and tuning of the 5S transmission

Box 5S It is not a “sweeping” but some owners ŠKODA modify it to improve reliability or sporting performance. Let’s take a look at the popular improvements:

  • 🔧 Reinforced synchronizers:

    Replacement of standard brass rings with ceramic (for example, from Sachs or LuK) increases the resource of aggressive driving. The cost of the set is from 5 000 rubles.

  • 🛡️ Installation of the bearing instead of the sleeve:

    The secondary shaft can be placed needle bearing instead of a factory bushing. This reduces backlash and noise, but requires precise fitting. The price of work is from 8000 rubles.

  • ⚙️ Short stroke:

    Shortening the switching lever (or setting the backstage from Golf GTIswitches quicker and clearer. Cost - from 3,000 rubles. per set.

  • 🛢️ Supplemented oil:

    Use of oils with molybdenum (for example, Liqui Moly Getriebeoil Additiv) reduces the wear of synchronizers. The price of the supplement is from 500 rubles.

Important: Any modifications void the warranty (if there is one) and can accelerate wear other nodes. For example, rigid synchronizers increase the load on the switch plugs.

💡

If you are planning to tuning the 5S gearbox, first check the state of the clutch and the squeeze bearing. The worn clutch negates all the advantages of the upgraded box.

Comparison of the 5S with other ŠKODA boxes

To understand how much 5S It is suitable for your driving style, compare it with other transmissions installed on the ŠKODA:

Characteristics 5S (MQ250) MQ350 (6-speed) 02E (DSG-6) 0AM (DSG-7)
Number of gears 5 6 6 (robot) 7 (robot)
Max. torque, Nm 200 250 250 200
Resource, thousand km 250–300 300–400 150–200 100–150
Service Replace oil once in 90-120 thousand. km Replace oil once in 90 thousand. km Replace oil and clutch once every 60,000. km Replace oil once every 60,000. km
Typical problems Wear of synchronizers, back shaft Flow of the glands, wear of bearings Clutch wear, mechatronics Overheating, switching jerks

Conclusion: 5S - one of the most reliable and maintainable PPC in the line ŠKODA, but loses MQ350 comfort and resource. If it matters simplicity and durabilityNot the dynamics, then. 5S - an excellent choice.

Frequent questions about the 5S ŠKODA (FAQ)

❓ Can I pour GL-5 oil instead of GL-4 in the 5S transmission?

❌ No! Oils GL-5 contain aggressive additives that destroy synchronizers (especially copper or brass). For 5S only allowed GL-4 or specialized oils with tolerance VW G 052 171 A2.

❓ Why does the second gear crunch when switching?

🔧 The reason is wear of the synchronizer of the 2nd transmission. It's the most loaded gear, so it's the first one to fail. The solution is to replace the synchronizer (from 5 000 rubles). with work) or a complete bulkhead of the checkpoint (from 15 000 rubles).

❓ How to check the oil level in the 5S PPC without a hole?

🛠️ Can be used syringe with tube:

  1. Unscrew filler plug (also a test case).
  2. Put the tube in and check if the oil reaches the edge.
  3. If the level is low, add the oil with a syringe.

⚠️ Don’t overflow – excess oil is just as harmful as a lack of oil!

❓ How much does the 5S contract cost on the Octavia A5?

💰 The price depends on the condition and mileage:

  • 🔹 Used in good condition: 15,000–25,000 rub.
  • 🔹 Following major renovations: 25,000–35,000 rub.
  • 🔹 New (if you find one): 50,000–80,000 rub.

🔍 Before purchasing please check:

  • No backlashes.
  • Smooth gear shifting.
  • Absence of leaks and extraneous noise.
❓ Can I drive with a 5S humming gearbox?

⚠️ Briefly: You can, but it's impossible!

The hum points to bearing wear. If you ignore the problem, it will lead to:

  • 🔴 Breaking the gears.
  • 🔴 The box spell.
  • 🔴 Clutch damage.

🚨 At the first sign of a rumble Get a quick diagnostic.!