Common problems

Fiat Seicento electrical and lighting problems

How often MOT testers find lights and electrics faults on the Fiat Seicento at each age, against all cars of the same age, and which items come up most. From 3,730 DVSA MOT tests taken 2022 to 2025.

MOT data updated 28 September 2026

At 22 years, the most tested age

Lights and electrics fails per 100 MOTs (n=1,337)22.1

All cars at 22 years (n=913,980)19.7

Lights and electrics advisories and minor defects per 100 MOTs (n=1,337)8.9

All cars, same age (n=913,980)15.5

What stands out

At 22 years, 22.1 of every 100 MOTs of the Fiat Seicento found a lights and electrics fail (n=1,337), against 19.7 for all cars of that age (n=913,980).
It is above the all-car rate at 2 of the 3 ages with at least 1,000 tests.
The gap is widest at 22 years: 22.1 per 100 MOTs against 19.7 for all cars.
The lights and electrics fail item recorded most often at 22 years: headlamp aim: too low, on 8.2 per 100 MOTs.
The most common lights and electrics advisory or minor defect: registration plate lamp(s): inoperative in the case of multiple lamps or light sources, on 2.8 per 100 MOTs.

Lights and electrics fails by age

Solid line: this model. Dashed line: all cars at the same age.

Fiat Seicento: lights and electrics fails and advisories per 100 MOTs, by age, against all cars. Ages with fewer than 1,000 tests are not shown.
Age	Tests (n)	Fails	All cars	Advisories	All cars
20 years	1,086	21.8	21.2	9.8	17.4
21 years	1,307	19.7	20.6	10.3	16.7
22 years	1,337	22.1	19.7	8.9	15.5

Lights and electrics fail items at 22 years

Lights and electrics fail items on the Fiat Seicento at 22 years (n=1,337), per 100 MOTs, with all cars at the same age (n=913,980).
Item	Per 100 MOTs	All cars	Typical repair (estimate)
Headlamp aim: too low	8.2	1.8	£16 to £39 per car (rough guide)
Side/position light not working	4.6	4.6	£10 to £47 per lamp
Headlamp aim: projected beam image is obviously incorrect	2.8	3.2	£16 to £39 per car (rough guide)
Side repeaters: not working	2.2	0.5	£10 to £47 per lamp
Individual direction indicators: not working	2.1	0.6	£10 to £47 per lamp
Dipped headlight not working	1.9	1.6	£18 to £86 per lamp
Headlight aimed too high	1.9	1.3	£16 to £39 per car (rough guide)

Lights and electrics advisories and minor defects at 22 years

Advisories and minor defects are recorded, but the car still passes. Across all cars, a part with an advisory or minor defect failed at the next MOT 5.5 times in 100 (n=88,666,940 pairs of consecutive MOTs), against 0.3 times in 100 when the same part had none (n=12,936,860,350).

Lights and electrics advisories and minor defects on the Fiat Seicento at 22 years (n=1,337), per 100 MOTs, with all cars at the same age (n=913,980).
Item	Per 100 MOTs	All cars	If it needs replacing (estimate)
Registration plate lamp(s): inoperative in the case of multiple lamps or light sources	2.8	5.0
Individual direction indicators: slightly discoloured	1.8	1.7	£10 to £47 per lamp

Repair estimates are a guide for an independent garage: labour at the national median local garage rate (median £78 an hour from 65 garages, ONS price quotes) times estimated labour hours, plus a parts band. Labour hours and most parts bands are estimates, not quotes, and prices vary by model, engine and region. A warning light fault shows the cost of the diagnosis only.

What to check on a viewing

On the Fiat Seicento, the lights and electrics items testers fail most are headlamp aim: too low; side/position light not working; headlamp aim: projected beam image is obviously incorrect.

With someone outside, try every light: dipped and main beam, indicators, brake lights, fog lights and number plate lamps.
Check that the warning lights come on with the ignition and go out once the engine runs.
Look for misted, cracked or yellowed headlamp lenses.

Ask for the car's MOT history: a lights and electrics advisory that repeats from year to year has not been fixed. GOV.UK MOT history.

Questions

What are the common electrical and lighting problems on the Fiat Seicento?

At 22 years (1,337 MOTs), the lights and electrics fail items testers record most often are headlamp aim: too low (8.2 per 100 MOTs), side/position light not working (4.6 per 100 MOTs), headlamp aim: projected beam image is obviously incorrect (2.8 per 100 MOTs). The most common lights and electrics advisories or minor defects are registration plate lamp(s): inoperative in the case of multiple lamps or light sources (2.8) and individual direction indicators: slightly discoloured (1.8).

Does the Fiat Seicento have more electrical and lighting problems than other cars?

At 22 years it has 22.1 lights and electrics fails per 100 MOTs against 19.7 for all cars of the same age (2.4 more). It is above the all-car rate at 2 of the 3 ages with enough tests.

What does a lights and electrics repair cost on the Fiat Seicento?

For headlamp aim: too low, an independent garage estimate is £16 to £39 per car (rough guide). This is a guide built from the national median garage labour rate and estimated labour hours, not a quote.

Electrical and lighting problems on other Fiat models

Read this with care. A fail rate is not a measure of build quality. How far cars are driven, how they are used and how well owners maintain them all change it, and wear items such as tyres and brake pads are common fails. Compare a model only with cars of the same age. Methodology and limits.

The all cars figures cover all class 4 vehicles (cars and light vans) tested at the same age.

Looking at a Fiat Seicento?

These figures describe the model, not the car in front of you. Found one you might buy? See what the VetTheCar Buying Report covers, or use the tools that work without a registration.

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Repair estimates: ONS consumer price quotes for local garage labour (09/2025 to 08/2026), the MOT inspection manual for defect wording, and estimated labour hours and parts bands. Not affiliated with or endorsed by ONS.

Source

Contains public sector information licensed under the Open Government Licence v3.0. Source: DVSA anonymised MOT test data, class 4 normal MOT tests, 2022 to 2025. MOT data updated 28 September 2026.

Not affiliated with or endorsed by DVSA. How we calculate these figures · Data sources