Citroen C6

239 on UK roads in 2025-36 vs 2024

On the road

239

239 licensed

Change vs 2024

-13.1%

-36 cars

New in 2025

first-time registrations

Electrified

hybrid, plug-in & battery

The Citroen C6 is a rare sight on UK roads, with 239 licensed in 2025 - down 13.1% on 2024. None were registered new in 2025, so the fleet can only shrink as cars are retired. The fleet is overwhelmingly diesel (94%), with most in the 2.0-3.0L class. Most date from the 2005-2009 era.

How many are left?

Licensed Citroen C6 cars on the road over time

New registrations

First-time registrations per year

What the typical Citroen C6 looks like

Fuel, engine size and age across every Citroen C6 on the road today.

Fuel mix

Current split

239total

Petrol4.2%
Diesel94.1%
Other1.7%

Engine size

Cars on the road by engine capacity

2.0-3.0L208
Over 3.0L31

How old are they?

Share of cars by the year they were first registered

2005-200985%
2010-201415%

MOT & reliability

2025 MOT data

How a Citroen C6 holds up at its MOT and how it's driven - from 359 tests, tracked across 2022-2025.

First-time pass rate

Average for its class

75.2%

359 MOT tests in 2025 · 310 first-time

Pass rate over time

2022

74.5%

2023

76.8%

2024

75.8%

2025

75.2%

▲ 0.7 pts since 2022

Pass rate by age

First-time pass rate by the car's age (tested in 2025)

How a Citroen C6 is driven

tracked across 2022-25

How much it's driven

miles a year, from 402 cars tracked across years

4,081miles a year · low use

71.6%

low · <5k

25.6%

avg · 5-15k

2.7%

high · 15k+

Most cover 1,421-5,313 miles a year (median 3,071).

Miles driven by age

Yearly mileage as the car ages

Driven most when newer, easing as it gets older.

Mileage & condition

Typical mileage at test

Odometer when tested (2025)

108,150

60,110middle 50%: 77,874-136,199166,901

Typical odometer rising: 99,962 → 104,023 → 106,592 → 108,150

Holds up by mileage

Pass rate as the odometer climbs

Under 40k

85.7%

40-80k

76.6%

80-120k

75.4%

120k+

74.3%

Petrol vs diesel

First-time pass rate by fuel

Not enough data.

A 2025 Citroen C6 passes first time 75.2% of the time - below the 77.6% UK average. The typical one is driven about 4,081 miles a year, and reliability is mostly about miles: 85.7% of low-mileage cars pass versus 74.3% past 120k.

Why a C6 fails its MOT

2025 MOT data

Of 77 first-time fails, here's what gets flagged most. Most cars fail on more than one item, so shares add up past 100%.

Where a C6 fails

Share of failed tests, by area

Lamps & electrical39%

Brakes37.7%

Suspension35.1%

Tyres27.3%

Body & structure20.8%

Exhaust & emissions15.6%

Visibility7.8%

Seat belts2.6%

Top specific defects

Exact items most often recorded as the reason a car failed

A suspension pin, bush or joint excessively worn18

A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc12

The aim of a headlamp is not within limits laid down in the requirements11

Significant brake effort recorded with no brake applied indicating a binding brake10

A tyre cords visible or damaged9

A tyre seriously damaged9

A shock absorber damaged to the extent that it does not function or showing signs of severe leakage8

An obvious leak from any part of the system7

Warning device shows system malfunction7

Smoke opacity levels exceed the manufacturer's specified limit6

29.9% flagged dangerous·2.9 defects per fail·77 fails analysed

Citroen C6 - frequently asked

How many Citroen C6 are left in the UK?

There are 239 Citroen C6 cars still licensed on UK roads in 2025, down 13.1% on 2024.

How many new Citroen C6 were registered in 2025?

None were registered new in 2025, so the number on the road can only shrink as older cars are retired.

What fuel does the typical Citroen C6 use?

Most are diesel - about 94% of all Citroen C6 on the road, with the majority in the 2.0-3.0L engine class. In total, 0% are electrified (hybrid, plug-in or battery).

How old is the typical Citroen C6?

Most Citroen C6 cars on the road today date from the 2005-2009 era.

How reliable is the Citroen C6?

75.2% of Citroen C6 cars pass their MOT first time, compared with a UK average of 77.6% across all cars. The typical tested Citroen C6 has around 101,481 miles on the clock.

Buying a Citroen C6?

Before you buy a specific Citroen C6, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.

Check a car

What the typical Citroen C6 looks like

Fuel, engine size and age across every Citroen C6 on the road today.

Fuel mix

Current split

239total

Petrol4.2%
Diesel94.1%
Other1.7%

Engine size

Cars on the road by engine capacity

2.0-3.0L208
Over 3.0L31

How old are they?

Share of cars by the year they were first registered

2005-200985%
2010-201415%

MOT & reliability

2025 MOT data

How a Citroen C6 holds up at its MOT and how it's driven - from 359 tests, tracked across 2022-2025.

First-time pass rate

Average for its class

75.2%

359 MOT tests in 2025 · 310 first-time

Pass rate over time

2022

74.5%

2023

76.8%

2024

75.8%

2025

75.2%

▲ 0.7 pts since 2022

Pass rate by age

First-time pass rate by the car's age (tested in 2025)

How a Citroen C6 is driven

tracked across 2022-25

How much it's driven

miles a year, from 402 cars tracked across years

4,081miles a year · low use

71.6%

low · <5k

25.6%

avg · 5-15k

2.7%

high · 15k+

Most cover 1,421-5,313 miles a year (median 3,071).

Miles driven by age

Yearly mileage as the car ages

Driven most when newer, easing as it gets older.

Mileage & condition

Typical mileage at test

Odometer when tested (2025)

108,150

60,110middle 50%: 77,874-136,199166,901

Typical odometer rising: 99,962 → 104,023 → 106,592 → 108,150

Holds up by mileage

Pass rate as the odometer climbs

Under 40k

85.7%

40-80k

76.6%

80-120k

75.4%

120k+

74.3%

Petrol vs diesel

First-time pass rate by fuel

Not enough data.

Why a C6 fails its MOT

2025 MOT data

Of 77 first-time fails, here's what gets flagged most. Most cars fail on more than one item, so shares add up past 100%.

Where a C6 fails

Share of failed tests, by area

Lamps & electrical39%

Brakes37.7%

Suspension35.1%

Tyres27.3%

Body & structure20.8%

Exhaust & emissions15.6%

Visibility7.8%

Seat belts2.6%

Top specific defects

Exact items most often recorded as the reason a car failed

A suspension pin, bush or joint excessively worn18

A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc12

The aim of a headlamp is not within limits laid down in the requirements11

Significant brake effort recorded with no brake applied indicating a binding brake10

A tyre cords visible or damaged9

A tyre seriously damaged9

A shock absorber damaged to the extent that it does not function or showing signs of severe leakage8

An obvious leak from any part of the system7

Warning device shows system malfunction7

Smoke opacity levels exceed the manufacturer's specified limit6

29.9% flagged dangerous·2.9 defects per fail·77 fails analysed

Citroen C6 - frequently asked

How many Citroen C6 are left in the UK?

There are 239 Citroen C6 cars still licensed on UK roads in 2025, down 13.1% on 2024.

How many new Citroen C6 were registered in 2025?

None were registered new in 2025, so the number on the road can only shrink as older cars are retired.

What fuel does the typical Citroen C6 use?

Most are diesel - about 94% of all Citroen C6 on the road, with the majority in the 2.0-3.0L engine class. In total, 0% are electrified (hybrid, plug-in or battery).

How old is the typical Citroen C6?

Most Citroen C6 cars on the road today date from the 2005-2009 era.

How reliable is the Citroen C6?

75.2% of Citroen C6 cars pass their MOT first time, compared with a UK average of 77.6% across all cars. The typical tested Citroen C6 has around 101,481 miles on the clock.

Buying a Citroen C6?

Before you buy a specific Citroen C6, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.

Check a car