EXPERT IN AUTO PARTS
17 September 2025 (updated) Table of Contents
The automatic transmission of the Peugeot 307 shows characteristic weaknesses, which manifest themselves in jerky gear changes, delayed gear changes and complete failures. These frequent faults occur particularly in vehicles with a mileage of 80,000 km or more and affect both the 1.6 petrol and the 2.0 HDI variants. The reliability of the transmission is severely impaired if the transmission oil is not changed regularly. Typical symptoms are non-shifting behavior in certain gears and unusual noises when accelerating.
A systematic check is crucial for the early detection of transmission problems. The sensitive Peugeot 307 automatic transmissions require a complete oil change with original specification ATF Dexron III every 60,000 km. Regular diagnostics using an OBD scanner can identify fault codes such as P0715 (input speed sensor) or P0720 (output speed sensor) at an early stage. Preventive maintenance prevents costly total damage and preserves the service life of the transmission for up to 200,000 km.
-40%
RIDEX Tyre pressure sensor (TPMS)
with groove, with valves
Article number: 2232W0084
compared to
RRP
£ 43,80
£ 25,98
price incl. 20% VAT, excl. delivery costs
MOBIL Engine oil
0W-40, 4l
Article number: 153687
£ 52,15
£ 13,04 for 1 litre
price incl. 20% VAT, excl. delivery costs
BOSCH Water pump and timing belt kit
Number of Teeth: 134 L: 1276 mm, Width: 25,4 mm
Article number: 1 987 948 711
£ 70,41
price incl. 20% VAT, excl. delivery costs
-16%
LIQUI MOLY Engine oil
5W-30, 5l
Article number: 3707
compared to
RRP
£ 71,35
£ 59,73
Price per item
£ 11,95 for 1 litre
price incl. 20% VAT, excl. delivery costs
SKF Bellow Set, drive shaft
146 mm, with clamps
Article number: VKJP 01001
£ 9,61
price incl. 20% VAT, excl. delivery costs
The air conditioning system of the Peugeot 307 often fails due to defective compressors, leaking condensers or failed blower motors. These breakdowns occur more frequently from 60,000-80,000 km and lead to a complete loss of cooling performance. The 1.6 petrol models are particularly affected by these complaints, with the compressor often ceasing to function. The symptoms are manifested by warm air coming out of the nozzles, unusual noises or complete system standstill. In HDI engines, the blower may also fail, leading to a total loss of function.
Regular maintenance is essential for the longevity of the air conditioning system. The complex Peugeot 307 air conditioning systems require servicing every 40,000 km with refrigerant refilling and system cleaning. The refrigerant pressure should be between 2.2-2.8 bar, while the condenser must be regularly cleaned of dirt. A professional inspection can detect leaks at an early stage and prevent major damage by replacing the dryer or seals in good time.
The central locking system of the Peugeot 307 frequently shows defects due to defective door lock actuators, failed control units or corroded cable connections. These weak points manifest themselves as early as 40,000 km and mean that the vehicle cannot be locked or individual doors no longer respond. Typical symptoms are clicking noises without locking, incomplete locking of only individual doors or complete failure of the system. The HDI variants also have the additional problem that the horn does not work if the central locking control unit is defective.
A professional inspection is required to accurately diagnose the central locking problems. The susceptible Peugeot 307 door lock actuators must be checked every 80,000 km to ensure they are working properly, with particular attention paid to the rubber seals and cable connections. A preventive treatment with contact spray every 20,000 km can prevent corrosion and ensure the reliability of the system up to 150,000 km.
The Peugeot 307 exhibits characteristic starting problems, which manifest themselves particularly in HDI engines due to defective glow plugs, failed fuel pumps or faulty crankshaft sensors. These common faults occur more frequently after 100,000 km and lead to the engine no longer starting, especially in cold temperatures. The 2.0 HDI and HDI 110 variants are particularly affected, with the engine often failing to start in Eco mode. Typical symptoms are prolonged starting without ignition, irregular idling or complete standstill after being switched off.
Professional maintenance is crucial to avoid starting problems. The sensitive Peugeot 307 glow plugs of the HDI engines must be replaced every 80,000 km, and the pre-glow process should last at least 15 seconds. The fuel pressure should remain constant at 1350 bar, while the fuel filters must be replaced every 40,000 km. A regular check of the crankshaft sensor can prevent sudden failures and ensure starting capability up to 200,000 km.
The heating and ventilation problems of the Peugeot 307 are manifested by defective heating resistors, failed blower motors or blocked air flaps. These weak points occur particularly after 70,000 km and lead to the heating no longer producing warm air or the ventilation failing completely. In HDI models, the blower is particularly susceptible and often no longer works in all stages. Typical complaints are cold air despite the engine being warmed up, uneven air distribution or complete standstill of the ventilation system. The wiper water often stops working at the same time, as both systems are electrically connected.
A systematic check is essential to identify heating and ventilation problems. The wear-prone Peugeot 307 heating resistors should be checked every 60,000 km, whereby the resistance value must be between 1.2-1.8 ohms. The blower motor requires regular cleaning of leaves and dirt, while the air filters should be changed every 20,000 km. Preventive maintenance with a thermostat check every 80,000 km can prevent major breakdowns and ensure the long-term functionality of the air conditioning system.
VALEO Antifreeze
G12, yellow, 1l, Concentrate, Amine free-Phosphate free
Article number: 820734
More
£ 7,51
£ 7,51 for 1 litre
price incl. 20% VAT, excl. delivery costs
Article number: 218-986
£ 8,78
price incl. 20% VAT, excl. delivery costs
OPEL GM Engine oil
10W-40, 5l, Part Synthetic Oil
Article number: 19 42 046
£ 30,10
£ 6,02 for 1 litre
price incl. 20% VAT, excl. delivery costs
-24%
FEBI BILSTEIN Water Pump, window cleaning
12V
Article number: 24633
compared to
RRP
£ 14,99
£ 11,27
price incl. 20% VAT, excl. delivery costs
Article number: MN7701-20
More
£ 86,22
£ 4,31 for 1 litre
price incl. 20% VAT, excl. delivery costs
Based on the experience of Peugeot 307 drivers, the following additional problems occur:
| Strengths | Weak points |
|---|---|
| Comfortable suspension | Automatic transmission problems |
| Spacious interior | Air conditioning does not work |
| Good road holding | Central locking does not work |
| Versatile engine range | Engine does not start |
| Practical room layout | Heating does not work |
| Solid body | Ventilation no longer works |
| Acceptable consumption | Electrical problems |
The Peugeot 307 is a very practical vehicle with comfortable driving characteristics, but suffers from characteristic weaknesses in the electronics and wearing parts. Most problems can be avoided through consistent maintenance and timely intervention. Regular checks of the automatic transmission, air conditioning system and central locking system in particular are crucial for the longevity of the vehicle. With proper care, the Peugeot 307 can easily achieve a service life of over 200,000 km.
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