2004 Mercedes C 2.1L Diesel · GD04 RWV

The most recent DVSA test on this 2004 Mercedes-Benz C-Class was conducted on 5 May 2022 and resulted in a pass, although an advisory was issued concerning corrosion on the front brake pipework running to the rear axle. The MOT history over the preceding six years shows a largely stable maintenance trend, with the vehicle passing tests consecutively from 2016 through to 2022 without any recorded failures until the April 2022 attempt, which was a fail solely due to a non-functioning nearside side repeater lamp. Aside from tyre-related advisories in 2017 and 2022, the overall pattern suggests the vehicle has been broadly well-maintained on a test-by-test basis, although the recent advisory relating to brake pipe corrosion should be treated as a potential indicator of wider underfloor deterioration, particularly given the car's age. The recorded mileage of 126,627 miles across approximately 22 years equates to an annual usage rate of around 5,756 miles, which is notably low for a vehicle of this age and points to either a predominantly second-car role, significant periods of standing, or predominantly short-trip urban use. There is a four-year gap in the recorded MOT history between the 2018 test and the 2022 tests, which suggests either the vehicle was off the road for a period, stored, or that testing was not undertaken during that window. Low annual mileage does reduce wear on major drivetrain and engine components, but it introduces separate concerns including accelerated age-related degradation of rubber and polymer components, potential fluid degradation, corrosion from standing, and possible brake caliper seizure due to infrequent operation. Given the age of the vehicle and the recurring advisory relating to brake pipe corrosion, particular attention should be paid to the underfloor brake lines, rear axle pipework, and any visible signs of surface rust, flaking, or thinning of the metal, as corrosion in this area can progress rapidly and may necessitate sectional pipe replacement rather than simple cleaning. On a test drive, listen for any brake pedal sponginess suggesting fluid ingress through corroded sections, and inspect for uneven tyre wear which may indicate suspension component wear such as bushes or coil springs, particularly as a Mercedes-Benz of this age is known for ageing front suspension components. The 2022 advisory also noted an offside front tyre worn on edge, which warrants close inspection of the tracking geometry and suspension linkages on that corner. Beyond the recorded defects, a prospective buyer should carry out age-related checks regardless of the apparent clean MOT record. Inspect all four tyres closely for sidewall cracking, perishing, or ozone damage, as tyres over six years old deteriorate chemically even with adequate tread depth, and check the manufacturing date on the sidewall. Examine brake discs for surface corrosion and confirm that all calipers release cleanly, as long periods of standing commonly lead to binding and uneven pad wear. Verify the condition and charge state of the 12V battery, as batteries beyond five years of age are prone to failure, and inspect under the bonnet for perished hoses, degraded coolant, and oil leaks from common Mercedes-Benz areas such as the oil filter housing and valve cover gasket. Given the gap in MOT history, it is also advisable to confirm a continuous service record with evidence of recent replacement of brake fluid, coolant, and transmission fluid, as time-based servicing is just as critical as mileage-based intervals for a vehicle of this vintage.