Tesla Model S 2014: reliability & common MOT faults

At a glance

How 558 first tests went in 2025.

Passed first time: 72 in every 100
Did not pass first time: 28 in every 100159 failed first-attempt tests
The typical car: 11 yearsabout 109,238 miles
First tests counted: 558

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 2014 Tesla Model S 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.

Suspension

One fault: suspension arm ball joint (front), 2.3 times as often as on similar cars.

Figures below are measured across the 159 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.

Suspension arm ball joint (front)

Failed on 25 first tests2.3 times as often as similar carsPossible evidence

What it means

A suspension arm ball joint is failed under the general suspension pin, bush or joint wording. Excessively worn is Major, and likely to become detached is graded Dangerous.

Also noted as an advisory

Testers also noted it as an advisory, worn but not yet failing, on 23 first tests, 6.2 times as often as on similar cars.

Data: UK MOT open data, 2025. Compared with cars of the same age and mileage. Advisories count notes recorded on failed first tests only.

MOT pass rates

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

Passed first time: 72in every 100; Passed on the first test.
Fixed at the station: 1in every 100; Failed, then fixed at the test station the same day.
Failed: 27in every 100; Did not pass, and were not fixed at the test station.

First-attempt pass 71.5% of 558 first tests (2025): only cars that passed first time count. Official-style pass 72.9%: cars fixed at the test station also count as a pass. The 1 fixed and the 27 not fixed make the 28 in every 100 that did not pass first time.

Same model, other years

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

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

Year	Passed first time	First tests
2014 This car	72 in every 100	558
2015	75 in every 100	1,188
2016	78 in every 100	2,130
2017	80 in every 100	2,338
2018	82 in every 100	1,696
2019	84 in every 100	1,134
2020	80 in every 100	827

FAQs

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

Is the 2014 Tesla Model S reliable?

With 558 first tests, there are too few to say whether the 2014 Tesla Model S differs from the model years either side. Treat the faults below as a checklist. In 2025, 71.5% of 558 first MOTs on the 2014 Tesla Model S passed first time (PRS: items fixed at the station the same day, counted as a fail). The official-style rate including PRS is 72.9%. Among 159 failed first-attempt MOT tests (test year 2025), Suspension arm ball joint (front) appears more often than on similar cars (15.7% of those tests; 25 observed failures; about 2.3× 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.

What common MOT faults stand out on the Tesla Model S 2014?

Among failed first-attempt tests we highlight patterns that appear more often than on similar cars. Top example: Suspension arm ball joint (front) (15.7% of those tests; 25 observed failures; about 2.3× more often than similar cars). These are statistical signals, not a diagnosis of any individual car.

Why does Suspension arm ball joint (front) stand out?

Suspension arm ball joint (front) shows up more often than on similar cars (15.7% of those tests; 25 observed failures; about 2.3× 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.

What are common problems with the 2014 Tesla Model S?

Common MOT problem areas for the 2014 Tesla Model S include Suspension arm ball joint (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.

What does this Tesla Model S 2014 MOT report cover?

This page highlights MOT failure patterns for the 2014 Tesla Model S (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.

Does this include engine and gearbox problems?

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.