MOT History from tests of petrol ALFA ROMEO 166s year 2005

Review the list of common ALFA ROMEO 166 failures below or to perform a specific mot history check on your ALFA ROMEO then use our popular KnowYourCar service

mot history

Pass percent:59.54%

(The average a petrol ALFA ROMEO 166 year 2005 passes without issue)

Based on:1,206 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	97
Windscreen wiper does not clear the windscreen effectively	73
Parking brake: efficiency below requirements \|3.7.B.7\|	69
Brake pipe excessively corroded	55
Rear parking brake recording little or no effort	39
Rear brake binding	27
Registration plate lamp issues	27
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	20
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	19
Registration plate issues	17
Parking brake efficiency below requirements (1.4.2 (a) (i))	16
Offside Front coil spring broken \|2.4.C.1a\|	15
Exhaust system not adequately supported \|7.1.1\|	11
Offside Rear fog lamp not working \|1.3.2b\|	10
Rear Exhaust system not adequately supported \|7.1.1\|	10
Brakes imbalanced across an axle	10
Exhaust emissions Lambda reading after 2nd fast idle outside specified limits \|7.3.D.3\|	9
Nearside Front coil spring broken \|2.4.C.1a\|	9
Front brake disc in such a condition that it is seriously weakened	9
Brake hose excessively deteriorated	8
Centre Exhaust system not adequately supported \|7.1.1\|	8
Offside Stop lamp not working \|1.2.1b\|	8
Offside Front coil spring fractured \|2.4.C.1a\|	7
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	7
Nearside Front Upper Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	7
Parking brake lever has no reserve travel \|3.1.6b\|	7
Anti-lock braking system warning lamp indicates an ABS fault	7
Supplementary Restraint System warning lamp indicates a fault \|5.4.2\|	7
Offside Front Position lamp not working (4.2.1 (a) (ii))	6
Offside Rear Stop lamp not working \|1.2.1b\|	6
Offside Front Upper Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	6
Nearside Stop lamp not working \|1.2.1b\|	6
Fuel tank leaking \|7.2.3\|	6
Horn not working \|1.6.2a\|	6
Offside Front Coil spring fractured or broken (5.3.1 (b) (i))	5
Rear Brake cable insecure	5
Headlamp cleaning device inoperative \|1.7.2\|	5
Nearside Headlamp cleaning device inoperative \|1.7.2\|	5
Nearside Front Position lamp not working (4.2.1 (a) (ii))	5
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	5
Rear Mechanical brake component has restricted free movement	5
Offside Rear Rear fog lamp not working \|1.3.2b\|	5
Nearside Front Wheel bolt\|s\| missing \|4.2.A.1e\|	5
Offside Headlamp not working on dipped beam \|1.7.5a\|	5
Offside Front Position lamp not working \|4.2.1 \|a\|\|	5
Offside Rear Service brake excessively binding (1.2.1 (f))	5
Service brake: efficiency below requirements \|3.7.B.7\|	5
Stop lamp remains on when the brakes are released	5
Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))	4
Offside Headlamp cleaning device inoperative \|1.7.2\|	4
Nearside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	4
Nearside Front Coil spring fractured or broken (5.3.1 (b) (i))	4
Offside Headlamp not working on main beam \|1.7.5a\|	4
Nearside Stop lamp(s) not working (4.3.1 (a) (ii))	4
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	4
Nearside Front Upper Suspension arm pin or bush excessively worn (5.3.4 (a) (i))	4
Nearside Rear Stop lamp not working \|1.2.1b\|	4
Nearside Parking brake inoperative on one side (1.4.1 (a))	3
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))	3
Nearside Front Lower Suspension arm has excessive play in a ball joint \|2.4.G.2\|	3
Mechanical brake component has restricted free movement	3
Nearside Front Brake hose bulging under pressure \|3.6.B.3\|	3
Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` \|8.3.1e\|	3
Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))	3
Nearside Front coil spring fractured \|2.4.C.1a\|	3
Offside Front suspension has excessive play in a lower suspension ball joint \|2.5.B.1a\|	3
Nearside Inner Rear position lamp\|s\| not working \|1.1.A.3b\|	3
Nearside Rear Rear position lamp\|s\| not working \|1.1.A.3b\|	3
Offside Front Upper Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	3
Nearside Front Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.5.C.1a\|	3
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	3
Front Headlamp cleaning device inoperative \|1.7.2\|	3
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	3
Engine MIL inoperative or indicates a malfunction \|8.2.1.2 \|h\|\|	3
Centre Rear Exhaust system not adequately supported \|7.1.1\|	3
Nearside Headlamp not working on main beam \|1.7.5a\|	3
Offside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	3
Nearside Headlamp not working on dipped beam \|1.7.5a\|	3
Brake hose damaged	3
Nearside Rear brake caliper has restricted free movement \|3.5.1k\|	3
Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))	3
Offside Front Upper Suspension arm pin or bush excessively worn (5.3.4 (a) (i))	3
Rear brake disc in such a condition that it is seriously weakened	3
Offside Rear fog lamp not working (4.5.1 (a) (ii))	2
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	2
Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	2
Exhaust has a major leak of exhaust gases \|7.1.2\|	2
Nearside Front Shock absorbers has a serious fluid leak	2
Nearside Rear Service brake excessively binding (1.2.1 (f))	2
Offside Rear Rear fog lamp not working (4.5.1 (a) (ii))	2
Offside Front Shock absorbers has a serious fluid leak	2
Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt \|6.1.7 \|g\| \|ii\|\|	2
Rear Exhaust system insecure \|6.1.2 \|a\|\|	2
Parking brake efficiency less than 50% of the required value \|1.4.2 \|a\| \|ii\|\|	2
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	2
Exhaust emissions carbon monoxide content at idle excessive \|7.3.D.4\|	2
Offside Rear Brake cable has restricted free movement \|3.5.1k\|	2
Nearside Rear Wheel bolt\|s\| missing \|4.2.A.1e\|	2
Nearside Front Headlamp cleaning device inoperative \|1.7.2\|	2
Offside Front Headlamp cleaning device inoperative \|1.7.2\|	2
Offside Rear Wheel bolt\|s\| missing \|4.2.A.1e\|	2
Nearside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.5.C.1a\|	2
Nearside Headlamp light intensity severely reduced (4.1.4 (a))	2
Front Body mounting fixings insecure radiator panel (6.2.2 (c) (i))	2
Nearside Front Position lamp not working \|4.2.1 \|a\|\|	2
Nearside Front Brake hose excessively damaged \|3.6.B.4d\|	2
Exhaust emissions carbon monoxide content after 2nd fast idle excessive \|7.3.D.3\|	2
Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))	2
Nearside Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i))	2
Offside Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i))	2
Windscreen washer not working	2
Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.5.C.1a\|	2
Nearside Front Inner Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.5.C.1a\|	2
Nearside Front Headlamp aim so that beam "kick up" is not visible on the screen \|4.1.2 \|a\|\|	2
Offside Front Headlamp aim so that beam "kick up" is not visible on the screen \|4.1.2 \|a\|\|	2
Rear brake application uneven	2
Offside Headlamp cleaning device obviously defective \|1.7.2\|	2
Supplementary restraint system warning lamp indicates a fault \|7.1.6 \|a\|\|	2
Offside Stop lamp(s) not working (4.3.1 (a) (ii))	2
Rear rear brakes release unevenly \|3.7.B.4\|	2
Windscreen has damage	2
Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))	2
Nearside Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	2
Offside Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	2
Fuel hose leaking \|7.2.3\|	2
Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))	2
Emissions not tested \|7.0\|	2
Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i))	2
Parking brake efficiency below requirements \|1.4.2 \|a\| \|i\|\|	2
Offside Front Upper Suspension arm has excessive play in a ball joint \|2.4.G.2\|	2
Driver`s seat fore and aft adjustment mechanism not functioning as intended. \|6.2.A.3\|	2
Nearside Rear Brake cable has restricted free movement \|3.5.1k\|	2

We get to these numbers by trawling through over 1 billion MOT test results since 2004 and crunched the numbers. We remove anything to do with Tyres, as they are model independent and group together common non-model specific issues. We are trying to get to a picture of what models have what issues.

Please note: We take the data from the DVSA. This data is raw and can contain typos and spelling mistakes that garages may have entered while recording a MOT result. Specifically miss-match on names of models and makes. We are constantly cleaning the data so bear with the odd issue.

Got suggestions? We’re improving this section all the time. If you have any suggestions, please let us know.

Most common failures	No# failures
Headlamp aim out of alignment	97
Windscreen wiper does not clear the windscreen effectively	73
Parking brake: efficiency below requirements \|3.7.B.7\|	69
Brake pipe excessively corroded	55
Rear parking brake recording little or no effort	39
Rear brake binding	27
Registration plate lamp issues	27
Nearside Front position lamp\|s\| not working \|1.1.A.3b\|	20
Offside Front position lamp\|s\| not working \|1.1.A.3b\|	19
Registration plate issues	17
Parking brake efficiency below requirements (1.4.2 (a) (i))	16
Offside Front coil spring broken \|2.4.C.1a\|	15
Exhaust system not adequately supported \|7.1.1\|	11
Offside Rear fog lamp not working \|1.3.2b\|	10
Rear Exhaust system not adequately supported \|7.1.1\|	10
Brakes imbalanced across an axle	10
Exhaust emissions Lambda reading after 2nd fast idle outside specified limits \|7.3.D.3\|	9
Nearside Front coil spring broken \|2.4.C.1a\|	9
Front brake disc in such a condition that it is seriously weakened	9
Brake hose excessively deteriorated	8
Centre Exhaust system not adequately supported \|7.1.1\|	8
Offside Stop lamp not working \|1.2.1b\|	8
Offside Front coil spring fractured \|2.4.C.1a\|	7
Rear Exhaust has a major leak of exhaust gases \|7.1.2\|	7
Nearside Front Upper Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	7
Parking brake lever has no reserve travel \|3.1.6b\|	7
Anti-lock braking system warning lamp indicates an ABS fault	7
Supplementary Restraint System warning lamp indicates a fault \|5.4.2\|	7
Offside Front Position lamp not working (4.2.1 (a) (ii))	6
Offside Rear Stop lamp not working \|1.2.1b\|	6
Offside Front Upper Suspension arm has excessive play in a pin/bush \|2.4.G.2\|	6
Nearside Stop lamp not working \|1.2.1b\|	6
Fuel tank leaking \|7.2.3\|	6
Horn not working \|1.6.2a\|	6
Offside Front Coil spring fractured or broken (5.3.1 (b) (i))	5
Rear Brake cable insecure	5
Headlamp cleaning device inoperative \|1.7.2\|	5
Nearside Headlamp cleaning device inoperative \|1.7.2\|	5
Nearside Front Position lamp not working (4.2.1 (a) (ii))	5
Offside Front Front position lamp\|s\| not working \|1.1.A.3b\|	5
Rear Mechanical brake component has restricted free movement	5
Offside Rear Rear fog lamp not working \|1.3.2b\|	5
Nearside Front Wheel bolt\|s\| missing \|4.2.A.1e\|	5
Offside Headlamp not working on dipped beam \|1.7.5a\|	5
Offside Front Position lamp not working \|4.2.1 \|a\|\|	5
Offside Rear Service brake excessively binding (1.2.1 (f))	5
Service brake: efficiency below requirements \|3.7.B.7\|	5
Stop lamp remains on when the brakes are released	5
Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))	4
Offside Headlamp cleaning device inoperative \|1.7.2\|	4
Nearside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	4
Nearside Front Coil spring fractured or broken (5.3.1 (b) (i))	4
Offside Headlamp not working on main beam \|1.7.5a\|	4
Nearside Stop lamp(s) not working (4.3.1 (a) (ii))	4
Front Exhaust has a major leak of exhaust gases \|7.1.2\|	4
Nearside Front Upper Suspension arm pin or bush excessively worn (5.3.4 (a) (i))	4
Nearside Rear Stop lamp not working \|1.2.1b\|	4
Nearside Parking brake inoperative on one side (1.4.1 (a))	3
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))	3
Nearside Front Lower Suspension arm has excessive play in a ball joint \|2.4.G.2\|	3
Mechanical brake component has restricted free movement	3
Nearside Front Brake hose bulging under pressure \|3.6.B.3\|	3
Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` \|8.3.1e\|	3
Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))	3
Nearside Front coil spring fractured \|2.4.C.1a\|	3
Offside Front suspension has excessive play in a lower suspension ball joint \|2.5.B.1a\|	3
Nearside Inner Rear position lamp\|s\| not working \|1.1.A.3b\|	3
Nearside Rear Rear position lamp\|s\| not working \|1.1.A.3b\|	3
Offside Front Upper Suspension arm rubber bush deteriorated resulting in excessive movement \|2.4.G.2\|	3
Nearside Front Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.5.C.1a\|	3
Nearside Front Front position lamp\|s\| not working \|1.1.A.3b\|	3
Front Headlamp cleaning device inoperative \|1.7.2\|	3
Offside Rear position lamp\|s\| not working \|1.1.A.3b\|	3
Engine MIL inoperative or indicates a malfunction \|8.2.1.2 \|h\|\|	3
Centre Rear Exhaust system not adequately supported \|7.1.1\|	3
Nearside Headlamp not working on main beam \|1.7.5a\|	3
Offside Headlamp aim beam image obviously incorrect \|1.8.A.1b\|	3
Nearside Headlamp not working on dipped beam \|1.7.5a\|	3
Brake hose damaged	3
Nearside Rear brake caliper has restricted free movement \|3.5.1k\|	3
Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))	3
Offside Front Upper Suspension arm pin or bush excessively worn (5.3.4 (a) (i))	3
Rear brake disc in such a condition that it is seriously weakened	3
Offside Rear fog lamp not working (4.5.1 (a) (ii))	2
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	2
Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	2
Exhaust has a major leak of exhaust gases \|7.1.2\|	2
Nearside Front Shock absorbers has a serious fluid leak	2
Nearside Rear Service brake excessively binding (1.2.1 (f))	2
Offside Rear Rear fog lamp not working (4.5.1 (a) (ii))	2
Offside Front Shock absorbers has a serious fluid leak	2
Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt \|6.1.7 \|g\| \|ii\|\|	2
Rear Exhaust system insecure \|6.1.2 \|a\|\|	2
Parking brake efficiency less than 50% of the required value \|1.4.2 \|a\| \|ii\|\|	2
Nearside Front Headlamp not working on dipped beam \|1.7.5a\|	2
Exhaust emissions carbon monoxide content at idle excessive \|7.3.D.4\|	2
Offside Rear Brake cable has restricted free movement \|3.5.1k\|	2
Nearside Rear Wheel bolt\|s\| missing \|4.2.A.1e\|	2
Nearside Front Headlamp cleaning device inoperative \|1.7.2\|	2
Offside Front Headlamp cleaning device inoperative \|1.7.2\|	2
Offside Rear Wheel bolt\|s\| missing \|4.2.A.1e\|	2
Nearside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.5.C.1a\|	2
Nearside Headlamp light intensity severely reduced (4.1.4 (a))	2
Front Body mounting fixings insecure radiator panel (6.2.2 (c) (i))	2
Nearside Front Position lamp not working \|4.2.1 \|a\|\|	2
Nearside Front Brake hose excessively damaged \|3.6.B.4d\|	2
Exhaust emissions carbon monoxide content after 2nd fast idle excessive \|7.3.D.3\|	2
Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))	2
Nearside Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i))	2
Offside Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i))	2
Windscreen washer not working	2
Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.5.C.1a\|	2
Nearside Front Inner Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc \|2.5.C.1a\|	2
Nearside Front Headlamp aim so that beam "kick up" is not visible on the screen \|4.1.2 \|a\|\|	2
Offside Front Headlamp aim so that beam "kick up" is not visible on the screen \|4.1.2 \|a\|\|	2
Rear brake application uneven	2
Offside Headlamp cleaning device obviously defective \|1.7.2\|	2
Supplementary restraint system warning lamp indicates a fault \|7.1.6 \|a\|\|	2
Offside Stop lamp(s) not working (4.3.1 (a) (ii))	2
Rear rear brakes release unevenly \|3.7.B.4\|	2
Windscreen has damage	2
Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))	2
Nearside Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	2
Offside Headlamp excessively deteriorated so that the light output is severely reduced \|1.7.5a\|	2
Fuel hose leaking \|7.2.3\|	2
Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))	2
Emissions not tested \|7.0\|	2
Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i))	2
Parking brake efficiency below requirements \|1.4.2 \|a\| \|i\|\|	2
Offside Front Upper Suspension arm has excessive play in a ball joint \|2.4.G.2\|	2
Driver`s seat fore and aft adjustment mechanism not functioning as intended. \|6.2.A.3\|	2
Nearside Rear Brake cable has restricted free movement \|3.5.1k\|	2

MOT History from tests of petrol ALFA ROMEO 166s year 2005

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