About the Mercedes-Benz 520
The Mercedes-Benz 520 designation has appeared across several E-Class generations, most notably the W210 (1995-2002) and W211 (2002-2009) series. Early models featured a 3.2-litre straight-six engine producing around 224bhp, while later iterations moved to V8 configurations. The 520 offered executive comfort with leather upholstery, automatic transmission, and comprehensive safety equipment as standard. Build quality is generally excellent, though earlier W210 models can suffer from rust issues. The W211 generation introduced more modern technology and improved refinement, making it a popular choice among used buyers seeking premium German engineering at accessible prices.
What Affects the Price
Age and mileage are primary factors, with pre-2005 W210 models starting around £9,000-£15,000, whilst W211 versions from 2005-2009 command £15,000-£35,000. Full Mercedes-Benz service history significantly increases value, often adding 15-20% to asking prices. Specification matters considerably—Elegance and Avantgarde trim levels, panoramic sunroofs, COMAND navigation, and xenon headlights all attract premiums. Condition is crucial as repair costs for air suspension, electronics, and specialist mechanical work can be substantial. Mileage over 100,000 miles typically reduces prices by 20-30%, though well-maintained high-mileage examples offer excellent value. Colour choice impacts desirability, with silver, black, and dark blue being most sought-after.
Buying Tips
Inspect service history thoroughly—look for evidence of regular oil changes and gearbox servicing, as the 5-speed and 7-speed automatic transmissions require maintenance every 40,000 miles. Check for rust on W210 models, particularly around wheel arches, sills, and boot floor. Test all electronic systems including seats, windows, and climate control, as failures are common and expensive to rectify. Listen for air suspension compressor noise and check for uneven ride height, indicating potential airbag or valve block issues costing £1,000+ to repair. Examine engine for oil leaks, particularly from valve covers and oil cooler seals. Consider independent pre-purchase inspections from Mercedes specialists, typically costing £150-£200 but potentially saving thousands. Verify MOT history online for patterns of advisories or failures indicating neglect.