6-speed / EAT6
First-generation 508 automatics can develop hydraulic, valve-body, converter and internal-clutch symptoms as mileage rises.
Peugeot 508 Gearbox Repair Specialists in the South East
SPEAK TO A TECHNICIAN NOW 01580 239 610 8am - 5.30pm Mon-Fri
Peugeot 508 Automatic & Hybrid Gearbox Specialists
Peugeot 508 Gearbox Repair Specialists in the South East
The Peugeot 508 automatic range includes first-generation conventional automatics and later EAT6 applications, while the second generation is strongly associated with EAT8 and plug-in hybrid e-EAT8. Smoothness is a major part of the 508's character, so subtle changes in shift quality can be an early warning.
If your 508 hesitates before Drive engages, flares between gears, downshifts abruptly or displays a gearbox/hybrid warning, we identify the exact automatic before assessing pressure, valve-body and electrified-drive data.
Diagnostics From £30Identify the fault first
Fixed QuoteBefore repair work begins
Peugeot Auto SpecialistsEAT, e-DSC & hybrid systems
Repair WarrantyConfirmed with your quotation
Which 508 Do You Have?
Peugeot 508 Generations and Automatic Gearboxes
UK 508 automatics have used conventional six-speed automatic technology, EAT6 and later EAT8. Second-generation plug-in hybrid models use e-EAT8 with an electric motor integrated with the eight-speed automatic.
| 508 generation / type | Typical UK versions | Automatic gearbox | What owners often search for |
|---|---|---|---|
| 508 I automatic | HDi / THP automatic versions | 6-speed conventional auto / EAT6 depending on version | 508 automatic fault, delayed Drive, valve body |
| 508 II petrol / diesel | PureTech 130 / BlueHDi 130 and other relevant versions | EAT8 eight-speed automatic | 508 EAT8 problems, harsh shift, gearbox slipping |
| 508 II plug-in hybrid | Hybrid 180 / 225 | e-EAT8 hybrid eight-speed automatic | 508 hybrid gearbox fault, e-EAT8 warning |
| 508 PSE | Hybrid 360 4WD | e-EAT8 with electrified drivetrain | 508 PSE gearbox warning, hybrid transmission fault |
Not sure which gearbox is fitted? Peugeot transmission specification can change by engine, year and trim. We can identify the unit from the registration/VIN before diagnosis or parts are quoted.
Transmission Families
Earlier automatic
Second-generation core
Plug-in hybrid
Performance hybrid
Peugeot 508 Gearbox Types Explained
EAT8
EAT8 is central to later petrol and diesel 508s. Pressure regulation and solenoid behaviour are important when refinement deteriorates.
e-EAT8
Hybrid 180/225 versions integrate an electric motor with the eight-speed automatic, so gearbox and hybrid controls must be viewed together.
PSE e-EAT8
Peugeot Sport Engineered models use e-EAT8 within a higher-output electrified drivetrain, requiring specification-specific diagnosis.
Common Problems
Common Peugeot 508 Gearbox Issues
508 drivers often search for “EAT8 gearbox fault”, “delayed Drive”, “jerky downshift” and “508 hybrid transmission problem”. Because the 508 normally shifts smoothly, even a relatively subtle change can be worth investigating early.
Delayed Drive / Reverse
A pause before engagement can involve hydraulic pressure, valve-body response or internal clutch application.
Harsh Downshift
An abrupt downshift may come from pressure regulation, solenoid behaviour or adaptation rather than a single failed hard part.
RPM Flare / Slip
Engine speed rising ahead of road speed can indicate lost torque transfer and should be investigated before further wear develops.
Fault When Warm
A problem that appears only after a longer drive can expose marginal hydraulic pressure or internal condition.
Gearbox Warning
Stored transmission codes should be read even if the message later clears and the car seems normal again.
Hybrid Driveability Fault
On e-EAT8 cars, transmission behaviour may overlap with electric-motor and hybrid-system control.
Describe the Symptom
What Does a Peugeot 508 Gearbox Fault Sound or Feel Like?
Tell us whether the 508 fault happens on the first engagement, during a 2–1 or 3–2 downshift, under motorway acceleration or while the hybrid system changes power source.
| What you notice | How drivers describe it | Possible areas to investigate |
|---|---|---|
| Delay into Drive | “It pauses before engaging.” | Hydraulic pressure, valve body, clutch application |
| Harsh downshift | “It thumps as I slow down.” | Pressure regulation, solenoids, adaptation |
| RPM flare | “The revs rise between gears.” | Internal clutch slip, pressure loss, torque transfer |
| Fault when warm | “It only acts up after a long journey.” | Heat-related pressure or internal wear |
| Hybrid warning / hesitation | “The PHEV shows a transmission message or pauses.” | e-EAT8 motor integration and hybrid control |
Diagnostic Trouble Codes
Peugeot 508 Gearbox Fault Codes
508 gearbox codes should be interpreted with conventional EAT or e-EAT8 hybrid specification in mind. Plug-in hybrid versions add motor and powertrain data that a generic transmission scan can miss.
| Fault / code family | Broad area | What may need checking |
|---|---|---|
| P0700 / transmission warning | General automatic gearbox control | Peugeot-specific DTCs, freeze-frame and actual gear state |
| Pressure / solenoid faults | EAT6 / EAT8 valve body | Hydraulic regulation, solenoid function and leakage |
| Ratio / slip faults | Internal transmission | Commanded ratio, clutch application and internal wear |
| Temperature / protection faults | Automatic gearbox safeguard | Fluid temperature, pressure and internal friction |
| Hybrid transmission faults | e-EAT8 | Electric motor integration, hybrid controller and gearbox state |
On a 508, EAT8 and e-EAT8 codes should be checked against live pressure, ratio and hybrid-motor information before deciding the transmission needs rebuilding.
Repair Costs
How Much Does a Peugeot 508 Gearbox Repair Cost?
508 pricing depends on whether the problem is a conventional EAT hydraulic fault, internal gearbox wear or an e-EAT8 hybrid issue. PHEV and PSE transmissions should be assessed before a fixed repair route is chosen.
| Peugeot 508 gearbox work | Typical guide range | What can change the price? |
|---|---|---|
| Diagnostic scan, road test and initial assessment | From £30 | Automatic / hybrid specification and test depth |
| EAT6 / EAT8 hydraulic or valve-body repair | Approx. £900 - £1,900+ | Pressure fault, solenoids and internal condition |
| Targeted transmission control repair | Approx. £800 - £1,650+ | Sensor, solenoid, control or wiring issue |
| Full automatic gearbox repair / reconditioning | Approx. £2.2k - £4.6k+ | Transmission family and internal damage |
| e-EAT8 / PSE hybrid transmission fault | Diagnosis required | Hybrid-system integration and failed component |
Important: These are guide ranges. The exact quotation depends on the transmission fitted, the confirmed fault and internal condition.
Diagnosis Before Parts
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How We Diagnose a Peugeot 508 Gearbox Fault
Identify the gearbox
Confirm the 508 generation, engine and conventional EAT or hybrid e-EAT8 transmission.
Scan the transmission
Read hydraulic pressure, ratio, slip, solenoid and hybrid-motor data as applicable.
Test the fault area
Reproduce the delay, downshift, warm-running or hybrid-transition symptom during a controlled road test.
Quote the correct repair
Quote the valve-body, control, internal or hybrid repair demonstrated by the diagnosis.
508 Gearbox Fault? Speak to a Specialist.
Tell us whether your 508 delays into Drive, downshifts harshly, slips, becomes worse when warm or displays a gearbox/hybrid warning.
South-East Coverage
Peugeot 508 Gearbox Repairs Across the South East
Service4Service South-East provides Peugeot 508 EAT8 and e-EAT8 gearbox diagnosis across the region, including petrol, diesel and plug-in hybrid variants.
Our model-level content targets the symptoms 508 owners actually describe, while the regional links below connect diagnosis with South-East repair coverage.
More Peugeot gearbox guides:
For broader Peugeot automatic transmission information, see our Peugeot gearbox repair page for the South East.
Common Search Questions
Peugeot 508 Gearbox Problems: Straight Answers
Why is my Peugeot 508 EAT8 jerky when slowing down?
Harsh downshifts can involve pressure regulation, valve-body solenoids, adaptations or internal wear and should be assessed with live gearbox data.
Why is my Peugeot 508 slow to engage Drive?
Delayed engagement can be linked to hydraulic pressure build-up, valve-body response or internal clutch application.
Does the Peugeot 508 use an EAT8 gearbox?
Yes. Second-generation petrol and diesel automatic versions commonly use EAT8.
What gearbox does a Peugeot 508 Plug-in Hybrid use?
Relevant plug-in hybrid 508 versions use e-EAT8, integrating an electric motor with the eight-speed automatic transmission.
Can a Peugeot 508 automatic gearbox be repaired?
Yes. Hydraulic, valve-body, control and internal repairs are possible depending on the exact gearbox and diagnosis.
How much does a Peugeot 508 gearbox repair cost?
Targeted EAT8 repairs can cost less than full reconditioning. e-EAT8 and PSE hybrid faults require individual diagnosis because of the electrified drivetrain.
Get a Peugeot 508 Gearbox Diagnosis
For a 508 automatic fault, confirm EAT8 versus hybrid e-EAT8 and diagnose the hydraulic, internal or electrified system that matches the car.
