2008 Renault Megane 1.5L Diesel · PN58 OTE

The Renault Mégane’s diesel engine (1.5L) will likely have higher running costs than petrol alternatives, with fuel economy around 40-45 MPG (real-world figures may vary). Diesel tax in 2026 will place the car in the £160/year band, assuming it meets current emissions standards (though older diesels may face higher penalties if retrofitted). Insurance is likely in the Group 25-30 range, costing around £1,000-£1,500/year depending on the buyer’s profile. Maintenance costs for a 17-year-old diesel can be steep, with potential issues including timing chain wear (£800-£1,500), oil consumption (£200-£500 for top-ups), and suspension components (£500-£1,200). Estimating an annual running cost of £1,200-£1,800 accounts for fuel, tax, insurance, and typical maintenance, but this could rise if the vehicle’s wear issues escalate.

The most urgent checks should focus on the braking system and suspension, as the 2025 MOT highlighted wear in both areas. Inspect the brake discs for deep grooves, uneven wear, or cracks—if they’re worn to the metal or show pitting, replacement may be needed soon. The front Macpherson strut and near-side upper strut pin/bushing should be checked for excessive play or leaks; if the MOT advisories suggest wear, a mechanic should assess whether they’re failing or just showing signs of use. Other critical areas include the timing chain (common failure point in diesel engines), which should be inspected for signs of stretching or noise; if it’s been serviced recently, confirm the interval was followed. The exhaust system should be checked for leaks or corrosion, as diesel engines are prone to rust in the undercarriage. Finally, test the electrical systems—the Mégane’s infotainment and lighting can be finicky, and a faulty coil spring (a top MOT failure) could lead to wiring issues if the suspension is compromised.