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Mercedes-Benz S-Class MOT Results
69.6% pass rate
from 2,537 tests in 2017
Number of tests by age
More MoT Results
Failure rates by item
Here you can drill down into the failure rates for each item on the test. We've also compared the rates to the average results for pre-1990 cars and highlighted areas where the Mercedes-Benz S-Class is unusually good or bad.
-
15% fail on
Lamps, Reflectors and Electrical Equipment
- 4.7% fail on Headlamp aim
-
3.2% fail on
Rear fog lamp
(41% worse than other pre-1990 cars)
- 2.6% fail on Fog lamp
- 0.95% fail on Tell tale (120% worse than other pre-1990 cars)
- 0.51% fail on Switch (2 times worse than other pre-1990 cars)
-
2.8% fail on
Position lamps
- 1.7% fail on Front lamps
- 1.3% fail on Rear lamps
- 2.6% fail on Registration plate lamp
-
2.1% fail on
Headlamps
(39% better than other pre-1990 cars)
- 2.0% fail on Headlamp (34% better than other pre-1990 cars)
-
0.12% fail on
Headlamp defects which don't require an aim check on retest
- 0.12% fail on Main beam 'tell-tale'
-
0.039% fail on
Headlamp defects which do require an aim check on retest
- 0.039% fail on Main beam 'tell-tale'
- 0.039% fail on Switch
-
1.9% fail on
Direction indicators
(44% better than other pre-1990 cars)
-
1.9% fail on
Flashing type
(43% better than other pre-1990 cars)
- 0.79% fail on All direction indicators
- 0.67% fail on Individual lamps (61% better than other pre-1990 cars)
- 0.63% fail on Side repeaters
- 0.039% fail on Tell tales
-
1.9% fail on
Flashing type
(43% better than other pre-1990 cars)
- 1.9% fail on Stop lamp (35% better than other pre-1990 cars)
- 1.8% fail on Battery
-
1.3% fail on
Hazard warning
- 0.95% fail on Lamp
- 0.39% fail on Switch
- 0.079% fail on Tell tale
- 0.43% fail on Horn (79% better than other pre-1990 cars)
- 0.079% fail on Headlamp aim not tested
- 0.039% fail on Trailer electrical socket
- 0.039% fail on Rear reflectors
-
11% fail on
Brakes
-
6.9% fail on
Brake performance
(18% better than other pre-1990 cars)
- 3.4% fail on Rear wheels
- 2.5% fail on Front wheels (35% better than other pre-1990 cars)
- 2.0% fail on Parking brake performance (41% better than other pre-1990 cars)
- 0.99% fail on Service brake performance
- 0.47% fail on Brake performance not tested
- 0.20% fail on Brake imbalance (70% better than other pre-1990 cars)
- 0.039% fail on Brake operation
-
3.5% fail on
Hydraulic systems
-
3.0% fail on
Components
- 2.0% fail on Pipes
- 1.1% fail on Hoses
- 0.12% fail on Reservoirs
- 0.079% fail on Servos
- 0.039% fail on Valves
- 0.43% fail on Leaks
- 0.12% fail on Operation
- 0.079% fail on Brake fluid warning lamp
-
3.0% fail on
Components
- 1.6% fail on ABS (13 times worse than other pre-1990 cars)
-
1.1% fail on
Hub components
- 0.63% fail on Brake pads
- 0.28% fail on Brake discs
- 0.20% fail on Brake calipers
- 0.039% fail on Brake drums
- 0.039% fail on Brake back plates
-
0.51% fail on
Parking brake
- 0.51% fail on Condition
- 0.20% fail on Restricted movement
-
0.079% fail on
Prescribed areas
- 0.079% fail on Master cylinder/servo mounting
- 0.039% fail on Additional braking devices
-
0.039% fail on
Service brake control components
-
0.039% fail on
Pedal
- 0.039% fail on Anti-slip
-
0.039% fail on
Pedal
-
0.039% fail on
Mechanical components
- 0.039% fail on Cable
- 0.039% fail on Locking devices
-
6.9% fail on
Brake performance
(18% better than other pre-1990 cars)
-
9.1% fail on
Suspension
-
3.7% fail on
Prescribed areas
- 3.1% fail on Component mounting
- 0.63% fail on Subframe mounting
- 0.32% fail on Spring mounting (66% better than other pre-1990 cars)
-
1.8% fail on
Suspension arms
- 1.6% fail on Pins/bushes/ball joints
- 0.12% fail on Condition
- 0.039% fail on Attachment
- 1.3% fail on Front suspension joints
-
1.0% fail on
Anti-roll bars
- 0.43% fail on Linkage pins/bushes/ball joints
- 0.28% fail on Attachment
- 0.20% fail on Pins/bushes/ball joints
- 0.16% fail on Linkage condition
-
0.91% fail on
Coil springs
(160% worse than other pre-1990 cars)
- 0.87% fail on Condition (2 times worse than other pre-1990 cars)
- 0.039% fail on Location
-
0.63% fail on
Wheel bearings
(63% better than other pre-1990 cars)
- 0.59% fail on Front (47% better than other pre-1990 cars)
- 0.039% fail on Rear
-
0.35% fail on
Sub-frames
- 0.20% fail on Attachment
- 0.12% fail on Condition
- 0.039% fail on Pins/bushes/ball joints
-
0.35% fail on
Shock absorbers
(64% better than other pre-1990 cars)
- 0.35% fail on Condition (64% better than other pre-1990 cars)
-
0.16% fail on
Drive shafts
(84% better than other pre-1990 cars)
-
0.16% fail on
Front drive shafts
(82% better than other pre-1990 cars)
- 0.16% fail on Constant velocity joints (82% better than other pre-1990 cars)
-
0.16% fail on
Front drive shafts
(82% better than other pre-1990 cars)
-
0.12% fail on
Tie bars/rods
- 0.079% fail on Pins/bushes/ball joints
- 0.039% fail on Condition
-
0.079% fail on
Fluid suspension
- 0.039% fail on Suspension unit
- 0.039% fail on Pipes
-
0.079% fail on
Trailing arms
- 0.079% fail on Pins/bushes/ball joints
-
0.079% fail on
Radius arms
- 0.079% fail on Pins/bushes/ball joints
- 0.039% fail on General condition
-
3.7% fail on
Prescribed areas
-
8.0% fail on
Driver's view of the road
- 4.4% fail on Wipers (58% worse than other pre-1990 cars)
- 3.9% fail on Washers
- 0.39% fail on Windscreen
- 0.20% fail on Mirrors
- 0.16% fail on Bonnet
-
7.2% fail on
Exhaust, Fuel and Emissions
(25% worse than other pre-1990 cars)
- 3.0% fail on Exhaust system
- 3.0% fail on Emissions
-
1.6% fail on
Fuel system
- 0.99% fail on System (120% worse than other pre-1990 cars)
- 0.39% fail on Pipe
- 0.16% fail on Hose
- 0.12% fail on Cap
- 0.039% fail on Tank
- 0.35% fail on Emissions not tested
-
3.5% fail on
Tyres
(60% worse than other pre-1990 cars)
- 2.3% fail on Condition (85% worse than other pre-1990 cars)
- 1.3% fail on Tread depth
- 0.12% fail on Size/type
-
3.5% fail on
Body, Structure and General Items
- 1.8% fail on Body condition
-
0.79% fail on
Vehicle structure
- 0.79% fail on Chassis
-
0.79% fail on
Seats
- 0.75% fail on Drivers
- 0.35% fail on Passengers
-
0.24% fail on
Doors
- 0.12% fail on Passengers front
- 0.12% fail on Passengers other
- 0.12% fail on Speedometer
- 0.039% fail on Engine mountings
- 0.039% fail on Body security
-
0.039% fail on
Load security
- 0.039% fail on Bootlid
-
2.8% fail on
Steering
(37% better than other pre-1990 cars)
-
2.4% fail on
Steering system
(34% better than other pre-1990 cars)
- 1.5% fail on Track rod end
- 0.28% fail on Steering box
- 0.28% fail on Drag link end
- 0.16% fail on Steering damper (3 times worse than other pre-1990 cars)
- 0.12% fail on Ball joint
-
0.12% fail on
Other components
- 0.12% fail on Steering pivot point
-
0.079% fail on
Free play
- 0.079% fail on Steering box
-
0.24% fail on
Power steering
- 0.12% fail on Operation
- 0.079% fail on Pipes and hoses
- 0.079% fail on Other components
- 0.16% fail on Steering operation
- 0.12% fail on Locking devices
- 0.12% fail on Prescribed areas
-
2.4% fail on
Steering system
(34% better than other pre-1990 cars)
-
2.0% fail on
Seat Belts and Supplementary Restraint Systems
-
1.9% fail on
Seat belts
- 1.4% fail on Prescribed areas
- 0.28% fail on Condition
- 0.20% fail on Requirements
- 0.079% fail on Attachment
-
0.079% fail on
Supplementary restraint systems
(15 times worse than other pre-1990 cars)
- 0.079% fail on SRS Malfunction Indicator Lamp (16 times worse than other pre-1990 cars)
-
1.9% fail on
Seat belts
-
0.91% fail on
Registration plates and VIN
- 0.91% fail on Registration plate
- 0.039% fail on Vehicle Identification Number
-
0.16% fail on
Road Wheels
- 0.12% fail on Attachment
- 0.039% fail on Condition
-
0.039% fail on
Towbars
- 0.039% fail on Vehicle structure