Model Reports 4 min read Updated 18 Oct 2026

Toyota MR2 2003: reliability & common MOT faults

In 2025, 67 in every 100 first MOTs on a 2003 Toyota MR2 were passes. Most common reason for a fail: Handbrake efficiency below minimum (roller test).

Summary

The 2003 Toyota MR2 follows the pattern of the model years either side.

At a glance

How 1,080 first tests went in 2025.

Passed first time
67 in every 100
Did not pass first time
33 in every 100353 failed first-attempt tests
The typical car
22 yearsabout 90,178 miles
First tests counted
1,080

What failed most often

  1. Handbrake efficiency below minimum (roller test)34 in every 100 failed tests
  2. Petrol emissions (with catalyst)17 in every 100 failed tests

How we count this. Data: UK MOT open data, 2025. Only Class 4 cars on their first MOT of the year are counted. A car that fails and is fixed at the test station still counts as a fail in the first-attempt rate. These are raw results, not adjusted for age, mileage, or peer mix. The MOT does not test engine or gearbox internals.

Note:

These are patterns across 2003 Toyota MR2 vehicles in 2025, not a prediction that any one car will have them. Faults are grouped by part of the car. They come from MOT defect codes, not manufacturer bulletins, recalls or a diagnosis of any one car.

Brakes

Two faults. The strongest is the handbrake performance (roller test, rear): 7.8 times as often as on similar cars.

Figures below are measured across the 353 failed first attempts in 2025 that had a mileage recorded, which allows a like-for-like comparison.

We only list faults with at least 20 failures and a rate of about 2.0 times that of similar cars, which keeps one-off results out of the list.

Handbrake performance (roller test, rear)

Failed on 29 first tests7.8 times as often as similar carsPossible evidence

What it means

A parking brake that is inoperative on one side is Major. When tested on the road, the failure is the vehicle deviating excessively from a straight line. Vehicles whose parking brake was already tested as the secondary brake are not tested again for this.

Handbrake efficiency below minimum (roller test)

Failed on 120 first tests4.9 times as often as similar carsLikely evidence

What it means

A parking brake with efficiency below the minimum requirement is Major, and graded Dangerous where efficiency is less than half of the required value. On a roller brake tester, the requirement counts as met if more than half of the wheels of a brake system lock. The check applies only to vehicles whose parking brake was not already tested as the secondary brake.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.

Noise, emissions and leaks

One fault: petrol emissions (with catalyst), 2.4 times as often as on similar cars.

Petrol emissions (with catalyst)

Failed on 61 first tests2.4 times as often as similar carsPossible evidence

What it means

Emissions levels over the manufacturer's specified limits are Major, as are levels over default limits, which apply when no exact match is found for the vehicle. Dense blue or clearly visible black smoke at idle, held for a set period, is Major, except for certain older vehicles and two stroke engines where smoke is unavoidable. An induction or exhaust leak that could affect emissions levels is Major too.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage.

Advisories

Other things testers noted as worn or close to failing, more often than on similar cars.

An advisory is a note from the tester about something that has not failed yet. It is an early warning, not a fail.

Coil spring (front)

Noted on 35 first tests2.6 times as often as similar carsElevated evidence

Suspension arm (front)

Noted on 20 first tests2.4 times as often as similar carsElevated evidence

Brake performance (roller test, rear)

Noted on 21 first tests2.3 times as often as similar carsElevated evidence

Data: UK MOT open data, 2025. Counts cover advisories recorded on failed first tests only, compared with cars of the same age and mileage.

MOT pass rates

How first tests ended, and how the pass rates are counted.

Passed first time
67in every 100
Passed on the first test.
Fixed at the station
5in every 100
Failed, then fixed at the test station the same day.
Failed
28in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 67.3% of 1,080 first tests (2025): only cars that passed first time count. Official-style pass 72.3%: cars fixed at the test station also count as a pass. The 5 fixed and the 28 not fixed make the 33 in every 100 that did not pass first time.

Same model, other years

Passed first time in every 100, all tested in 2025.

4060801002000200120022003200420052006Older carsNewer cars
40608010020002003Older carsNewer cars

Newer cars are younger, so look for a jump rather than the climb.

YearPassed first timeFirst tests
200062 in every 100791
200165 in every 100741
200265 in every 100893
2003 This car67 in every 1001,080
200464 in every 1001,016
200571 in every 100745
200668 in every 100672

FAQs

Short answers about how to read this model-year guide.

The 2003 Toyota MR2 follows the pattern of the model years either side. Its main cause of failure was Handbrake efficiency below minimum (roller test), about 34 in every 100 failed tests. In 2025, 67.3% of 1,080 first MOTs on the 2003 Toyota MR2 passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 72.3%. Among 353 failed first-attempt MOT tests (test year 2025), Handbrake performance (roller test, rear) appears more often than on similar cars (8.2% of those tests; 29 observed failures; about 7.8× more often than similar cars). There is no single reliability score here; this is a pre-purchase checklist built from DVSA open data, not a guarantee for any individual car.
Ranked by how often they were actually recorded, the items that most often failed a 2003 Toyota MR2 at the first attempt were Handbrake efficiency below minimum (roller test) (34.0%) and Petrol emissions (with catalyst) (17.3%), each as a share of the year's failed first attempts. That is what goes wrong most often on the car. The common faults table shows a different measure: faults that are unusual compared with similar cars.
Among failed first-attempt tests we highlight patterns that appear more often than on similar cars. Top example: Handbrake performance (roller test, rear) (8.2% of those tests; 29 observed failures; about 7.8× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Handbrake performance (roller test, rear) shows up more often than on similar cars (8.2% of those tests; 29 observed failures; about 7.8× more often than similar cars). That does not prove a design fault. Age, mileage, and how the car was used still matter. Treat it as a pre-purchase checkpoint, not a manufacturer service bulletin.
Common MOT problem areas for the 2003 Toyota MR2 include Handbrake performance (roller test, rear), Handbrake efficiency below minimum (roller test), Petrol emissions (with catalyst). These are the faults that stand out compared with similar cars, not a complete list of what can go wrong on any individual car.
Advisories flag issues noted at the test and are not a fail rate. We show advisory patterns that appear more often than on similar cars among failed first-attempt tests, separate from common failure rows. Use them as early-warning checks, not as a pass/fail score.
This page highlights MOT failure patterns for the 2003 Toyota MR2 (registration year) using UK DVSA open data for the selected test year. Patterns are compared with cars of a similar age and mileage. It is a buyer checklist from MOT defect statistics, not a full service history or manufacturer service-bulletin list.
No. MOT tests do not cover engine internals, gearboxes, or many electronic modules. Patterns here come from MOT defect statistics only and should not be read as engine or gearbox reliability scores.

About this data

How this page is built and what it can (and can't) say.

These figures come from UK MOT open data for this model year. We surface common failure patterns against similar cars, not a full reliability score, and not a pass/fail verdict on any individual vehicle.

2024 2025

What we include

UK Class 4 cars only. Normal MOT tests (not retests); first test per vehicle per calendar year; results pass, PRS, or fail.

Same-day repairs

PRS means the car failed items that were fixed at the test station and then passed the same day. We count PRS as a first-attempt fail in headline rates so same-day repairs do not hide problems.

How we compare

We compare this model year with other Class 4 cars of similar age and mileage in the same test year. This model family is left out of the peer group so the car is not measured against itself.

What this does not cover

  • MOTs do not cover engine internals, gearboxes, or many electronics; this is not a full reliability score.
  • Common faults come from MOT defect stats, not manufacturer TSBs or recalls.
  • Age and mileage matching reduces, but does not remove, differences in how cars were used and maintained.
  • If the data for a car is too thin to say anything useful, we say so rather than guess.

Contains public sector information licensed under the Open Government Licence v3.0.

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