2007 Volvo S40

2007 Volvo S40

Overview

The 2007 Volvo S40, a compact executive car, offered a blend of Scandinavian design, safety, and a comfortable driving experience. Available with various engine and transmission configurations, it aimed to cater to a range of preferences. While generally considered a solid vehicle, like any car of its age, certain components and systems have shown tendencies for specific issues. This analysis focuses on documented reliability concerns beyond routine maintenance, providing insights into potential problem areas for owners and prospective buyers of the 2007 model year. Understanding these common issues can help in proactive maintenance and informed purchasing decisions.

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Engine

2.4L Naturally Aspirated (B5244S4)

Oil Leaks

• Symptoms: Visible oil stains under the vehicle, low oil level warnings, burning oil smell.
• Solution: Replacement of seals and gaskets (e.g., valve cover gasket, oil pan gasket).
• Cost: $300 - $700

PCV System Clogging

• Symptoms: Rough idle, increased oil consumption, engine misfires, potential for oil leaks.
• Solution: Cleaning or replacement of the Positive Crankcase Ventilation (PCV) system components.
• Cost: $200 - $500

2.5L Turbocharged (T5 - B5254T3)

Turbocharger Issues

• Symptoms: Loss of power, whistling noises from the engine bay, increased exhaust smoke.
• Solution: Repair or replacement of the turbocharger unit.
• Cost: $1000 - $2500

Ignition Coil Failure

• Symptoms: Engine misfires, rough idling, check engine light illumination.
• Solution: Replacement of faulty ignition coils.
• Cost: $100 - $300 per coil

Transmission

5-Speed Automatic (AW55-50SN)

Harsh Shifting / Slipping

• Symptoms: Jerky gear changes, delayed engagement, slipping between gears.
• Solution: Transmission fluid and filter change, solenoid replacement, or full transmission rebuild.
• Cost: $400 - $2500+

6-Speed Manual

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Suspension

Standard Chassis

Worn Control Arm Bushings

• Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
• Solution: Replacement of control arm bushings or the entire control arm assembly.
• Cost: $300 - $600

Strut Mount Bearing Failure

• Symptoms: Popping or creaking noises when turning the steering wheel, especially at low speeds.
• Solution: Replacement of the strut mount bearings.
• Cost: $200 - $400

Electrical

General Electrical System

Faulty Window Regulators

• Symptoms: Power windows failing to operate, slow or jerky window movement.
• Solution: Replacement of the window regulator mechanism.
• Cost: $200 - $400

CEM Module Issues

• Symptoms: Intermittent electrical faults, warning lights, non-functional accessories.
• Solution: Diagnosis and potential reprogramming or replacement of the Central Electronic Module (CEM).
• Cost: $500 - $1500+

Exterior

Body Panels & Trim

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Interior

Cabin Components

Climate Control Actuator Failure

• Symptoms: Airflow not directing correctly (e.g., only blowing on feet), unusual noises from the dashboard.
• Solution: Replacement of the faulty HVAC (Heating, Ventilation, and Air Conditioning) actuator(s).
• Cost: $200 - $500

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Summary Verdict

The 2007 Volvo S40 is a generally reliable vehicle, particularly praised for its safety features and comfortable ride. However, owners should be aware of potential issues, especially concerning the engine’s PCV system and oil leaks on the naturally aspirated variants, and turbocharger or ignition coil concerns on the T5 models. Automatic transmission problems, such as harsh shifting, can be costly to repair. Suspension components like control arm bushings and strut mounts may require attention as the vehicle ages. Electrical gremlins, particularly related to the CEM module and window regulators, are also noted. Regular maintenance and prompt attention to early symptoms can significantly mitigate these potential reliability concerns.