Triumph TR4

2,008 on UK roads in 2025+13 vs 2024

On the road

2,008

2,008 licensed

Change vs 2024

+0.7%

+13 cars

New in 2025

first-time registrations

Electrified

hybrid, plug-in & battery

The Triumph TR4 is an uncommon sight on UK roads, with 2,008 licensed in 2025 - up 0.7% on 2024. 9 were registered new in 2025. The fleet is overwhelmingly petrol (100%), with most in the 2.0-3.0L class. Most date from the Before 2000 era.

How many are left?

Licensed Triumph TR4 cars on the road over time

New registrations

First-time registrations per year

What the typical Triumph TR4 looks like

Fuel, engine size and age across every Triumph TR4 on the road today.

Fuel mix

Current split

2,008total

Petrol100.0%
Diesel0.0%

Engine size

Cars on the road by engine capacity

Electric1
Under 1.0L2
1.6-2.0L1
2.0-3.0L1,997
Over 3.0L7

How old are they?

Share of cars by the year they were first registered

Before 2000100%
2000-20040%
2005-20090%

MOT & reliability

2025 MOT data

How a Triumph Tr4 holds up at its MOT and how it's driven - from 238 tests, tracked across 2022-2025.

First-time pass rate

Average for its class

90%

238 MOT tests in 2025 · 221 first-time

Pass rate over time

2022

92%

2023

89.2%

2024

88.7%

2025

90%

▼ 2 pts since 2022

Pass rate by age

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

Too new for an age breakdown - most haven't reached MOT age (3 years) yet, so there isn't enough history to chart.

How a Triumph Tr4 is driven

tracked across 2022-25

How much it's driven

miles a year, from 240 cars tracked across years

1,573miles a year · low use

96.7%

low · <5k

1.3%

avg · 5-15k

2.1%

high · 15k+

Most cover 203-1,169 miles a year (median 565).

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)

41,116

4,549middle 50%: 14,355-67,21385,915

Typical odometer rising: 42,145 → 42,721 → 39,657 → 41,116

Holds up by mileage

Pass rate as the odometer climbs

Under 40k

90.2%

40-80k

92.4%

80-120k

84.8%

Petrol vs diesel

First-time pass rate by fuel

Not enough data.

A 2025 Triumph Tr4 passes first time 90% of the time - above the 77.6% UK average, and easing slightly year on year. The typical one is driven about 1,573 miles a year, and reliability is mostly about miles: 90.2% of low-mileage cars pass versus 84.8% past 120k.

Why a TR4 fails its MOT

2025 MOT data

Of 22 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 TR4 fails

Share of failed tests, by area

Brakes59.1%

Lamps & electrical31.8%

Steering27.3%

Suspension18.2%

Visibility13.6%

Exhaust & emissions13.6%

Body & structure9.1%

Seat belts9.1%

Top specific defects

Exact items most often recorded as the reason a car failed

Brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle.6

Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc5

Audible warning inoperative4

Significant brake effort recorded with no brake applied indicating a binding brake3

A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED2

A rear registration plate lamp or light source missing or inoperative in the case of a single lamp or all lamps2

Windscreen washers not working or not providing sufficient fluid to clear the windscreen2

Parking brake efficiency below minimum requirement2

The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired2

Service brake efficiency below minimum requirement2

22.7% flagged dangerous·3 defects per fail·22 fails analysed

Triumph TR4 - frequently asked

How many Triumph TR4 are left in the UK?

There are 2,008 Triumph TR4 cars still licensed on UK roads in 2025, up 0.7% on 2024.

How many new Triumph TR4 were registered in 2025?

9 brand-new Triumph TR4 cars were first registered in 2025.

What fuel does the typical Triumph TR4 use?

Most are petrol - about 100% of all Triumph TR4 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 Triumph TR4?

Most Triumph TR4 cars on the road today date from the Before 2000 era.

How reliable is the Triumph TR4?

90% of Triumph TR4 cars pass their MOT first time, compared with a UK average of 77.6% across all cars. The typical tested Triumph TR4 has around 35,089 miles on the clock.

Buying a Triumph TR4?

Before you buy a specific Triumph TR4, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.

Check a car

What the typical Triumph TR4 looks like

Fuel, engine size and age across every Triumph TR4 on the road today.

Fuel mix

Current split

2,008total

Petrol100.0%
Diesel0.0%

Engine size

Cars on the road by engine capacity

Electric1
Under 1.0L2
1.6-2.0L1
2.0-3.0L1,997
Over 3.0L7

How old are they?

Share of cars by the year they were first registered

Before 2000100%
2000-20040%
2005-20090%

MOT & reliability

2025 MOT data

How a Triumph Tr4 holds up at its MOT and how it's driven - from 238 tests, tracked across 2022-2025.

First-time pass rate

Average for its class

90%

238 MOT tests in 2025 · 221 first-time

Pass rate over time

2022

92%

2023

89.2%

2024

88.7%

2025

90%

▼ 2 pts since 2022

Pass rate by age

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

Too new for an age breakdown - most haven't reached MOT age (3 years) yet, so there isn't enough history to chart.

How a Triumph Tr4 is driven

tracked across 2022-25

How much it's driven

miles a year, from 240 cars tracked across years

1,573miles a year · low use

96.7%

low · <5k

1.3%

avg · 5-15k

2.1%

high · 15k+

Most cover 203-1,169 miles a year (median 565).

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)

41,116

4,549middle 50%: 14,355-67,21385,915

Typical odometer rising: 42,145 → 42,721 → 39,657 → 41,116

Holds up by mileage

Pass rate as the odometer climbs

Under 40k

90.2%

40-80k

92.4%

80-120k

84.8%

Petrol vs diesel

First-time pass rate by fuel

Not enough data.

Why a TR4 fails its MOT

2025 MOT data

Of 22 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 TR4 fails

Share of failed tests, by area

Brakes59.1%

Lamps & electrical31.8%

Steering27.3%

Suspension18.2%

Visibility13.6%

Exhaust & emissions13.6%

Body & structure9.1%

Seat belts9.1%

Top specific defects

Exact items most often recorded as the reason a car failed

Brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle.6

Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc5

Audible warning inoperative4

Significant brake effort recorded with no brake applied indicating a binding brake3

A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED2

A rear registration plate lamp or light source missing or inoperative in the case of a single lamp or all lamps2

Windscreen washers not working or not providing sufficient fluid to clear the windscreen2

Parking brake efficiency below minimum requirement2

The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired2

Service brake efficiency below minimum requirement2

22.7% flagged dangerous·3 defects per fail·22 fails analysed

Triumph TR4 - frequently asked

How many Triumph TR4 are left in the UK?

There are 2,008 Triumph TR4 cars still licensed on UK roads in 2025, up 0.7% on 2024.

How many new Triumph TR4 were registered in 2025?

9 brand-new Triumph TR4 cars were first registered in 2025.

What fuel does the typical Triumph TR4 use?

Most are petrol - about 100% of all Triumph TR4 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 Triumph TR4?

Most Triumph TR4 cars on the road today date from the Before 2000 era.

How reliable is the Triumph TR4?

90% of Triumph TR4 cars pass their MOT first time, compared with a UK average of 77.6% across all cars. The typical tested Triumph TR4 has around 35,089 miles on the clock.

Buying a Triumph TR4?

Before you buy a specific Triumph TR4, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.

Check a car