Model Reports 4 min read Updated 18 Oct 2026

Toyota Proace 2015: reliability & common MOT faults

In 2025, 50 in every 100 first MOTs on a 2015 Toyota Proace were passes. Most common reason for a fail: Drive shaft joints and boots (front).

Summary

The 2015 Toyota Proace follows the pattern of the model years either side.

At a glance

How 1,001 first tests went in 2025.

Passed first time
50 in every 100
Did not pass first time
50 in every 100498 failed first-attempt tests
The typical car
10 yearsabout 100,404 miles
First tests counted
1,001

What failed most often

  1. Drive shaft joints and boots (front)30 in every 100 failed tests
  2. Individual sidelight or tail light (front)25 in every 100 failed tests
  3. Suspension arm ball joint (front)12 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 2015 Toyota Proace 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.

Body and structure

Two faults. The strongest is the drive shaft joints and boots (front): 7.2 times as often as on similar cars.

Figures below are measured across the 497 of 498 failed first attempts (99.8%) that recorded an odometer reading in 2025. Mileage is needed to compare like with like.

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.

Drive shaft joints and boots (front)

Failed on 151 first tests7.2 times as often as similar carsStrong evidence

What it means

A constant velocity boot that is only severely deteriorated is Minor. It is Major once it is missing, split or insecure so that it no longer prevents the ingress of dirt. A transmission joint excessively worn is Major, and graded Dangerous when it is so worn it is likely to fail.

Exhaust system (rear)

Failed on 34 first tests5.0 times as often as similar carsLikely evidence

What it means

Exhaust fumes causing a danger to health of persons on board are graded Dangerous, and so is a silencer likely to become detached. Fumes entering the cabin are Major. One or more missing or defective mountings does not necessarily make the exhaust insecure, since testers assess the overall security of the system.

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

Lamps and electrical

Three faults. The strongest is the individual sidelight or tail light (front): 4.6 times as often as on similar cars.

Individual sidelight or tail light (front)

Failed on 126 first tests4.6 times as often as similar carsLikely evidence

What it means

A position lamp showing red light to the front or white light to the rear is Major. Rear lamps must show a steady red light, and front ones can show white, predominantly white with a blue tinge, or yellow if combined in a yellow headlamp. With a multiple light source, up to half not working is Minor and more than half is Major.

Brake light (rear)

Failed on 45 first tests3.0 times as often as similar carsLikely evidence

What it means

All stop lamps missing or not working is graded Dangerous, and so is a stop lamp that stays on when the brakes are released. A stop lamp that is missing or not working is Major. On some vehicles with LED rear lamps, part of the stop lamp can go out when the rear fog lamp is lit, which is not regarded as a defect.

Number plate lights

Failed on 40 first tests2.5 times as often as similar carsPossible evidence

What it means

Registration plate lamps must light up the rear registration plate and operate at the same time as the position lamps. A missing or inoperative lamp is Major when the plate has only one lamp or all its lamps are not working, and Minor when the plate has several lamps or light sources and not all have failed. A lamp throwing direct white light to the rear is also Minor.

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

Suspension

One fault: wheel bearings (front), 4.5 times as often as on similar cars.

Wheel bearings (front)

Failed on 21 first tests4.5 times as often as similar carsPossible evidence

What it means

Excessive play in a wheel bearing, or a bearing that is excessively rough, is Major. Play so excessive that the bearing is likely to break up or directional control is impaired is Dangerous, and so is a bearing so rough that it is likely to overheat or break up.

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

Noise, emissions and leaks

One fault: diesel emissions test (compression-ignition rules for vehicles from 01/01/2014), 3.6 times as often as on similar cars.

Diesel emissions test (compression-ignition rules for vehicles from 01/01/2014)

Failed on 29 first tests3.6 times as often as similar carsPossible evidence

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.

Individual direction indicators (rear)

Noted on 23 first tests6.3 times as often as similar carsElevated evidence

Exhaust system (rear)

Noted on 20 first tests4.6 times as often as similar carsPossible evidence

Engine oil leaks

Noted on 69 first tests2.5 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
50in every 100
Passed on the first test.
Fixed at the station
11in every 100
Failed, then fixed at the test station the same day.
Failed
39in every 100
Did not pass, and were not fixed at the test station.

First-attempt pass 50.2% of 1,001 first tests (2025): only cars that passed first time count. Official-style pass 61.0%: cars fixed at the test station also count as a pass. The 11 fixed and the 39 not fixed make the 50 in every 100 that did not pass first time.

Same model, other years

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

406080100201420152016201720182019202020212022Older carsNewer cars
40608010020152020Newer cars

Newer cars are younger, so look for a jump rather than the climb. A year earlier (2024), when these cars were a year younger, 51 in every 100 passed first time.

YearPassed first timeFirst tests
201452 in every 100721
2015 This car50 in every 1001,001
201656 in every 100546
201767 in every 1001,488
201871 in every 1001,863
201977 in every 1001,683
202078 in every 1001,604
202173 in every 1002,489
202276 in every 1003,538

FAQs

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

The 2015 Toyota Proace follows the pattern of the model years either side. Its main cause of failure was Drive shaft joints and boots (front), about 30 in every 100 failed tests. In 2025, 50.2% of 1,001 first MOTs on the 2015 Toyota Proace passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 61.0%. Among 498 failed first-attempt MOT tests (test year 2025), Drive shaft joints and boots (front) appears more often than on similar cars (30.4% of those tests; 151 observed failures; about 7.2× 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 2015 Toyota Proace at the first attempt were Drive shaft joints and boots (front) (30.4%), Individual sidelight or tail light (front) (25.4%) and Suspension arm ball joint (front) (12.3%), 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: Drive shaft joints and boots (front) (30.4% of those tests; 151 observed failures; about 7.2× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.
Drive shaft joints and boots (front) shows up more often than on similar cars (30.4% of those tests; 151 observed failures; about 7.2× 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 2015 Toyota Proace include Drive shaft joints and boots (front), Exhaust system (rear), Individual sidelight or tail light (front). 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 2015 Toyota Proace (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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