Fault File
All models / All cars / City cars / Suzuki Alto

Suzuki Alto

All generations and engines together · 41,030 MOT tests in the 2025 data · typical mileage at age 7: 12k

Reliability verdict
DBy miles

Graded against its peers

Worse than most city cars per mile driven. Watch brakes and suspension. A used buy worth some caution. Check the MOT history for repeating brakes advisories before you go.

First-time failure at 50-60k miles
33.2%
Across 5,520 tests. The average for city cars is 30.1%.
Typical mileage at age 7
12k miles
How far the average car has gone by seven years old. Low-mileage models can look better by age than they are.

What owners report

Reported

Owner folklore from forums and the motoring press, with how well each report stands up. Most of it never shows up in an MOT, which is why this section exists at all.

Engine and gearbox mount failures

Emerging

Several owners report the rubber engine and transmission mounts wearing out or failing early, causing a clunk on take-up and extra vibration through the cabin. One owner needed a third set of mounts by 7,500 miles, and similar reports have surfaced across the model's life. No manufacturer acknowledgement or TSB has been found for this, so treat it as a known weak point rather than a confirmed defect. Parts and labour for a set of mounts typically run to a few hundred pounds.

Reported from as early as 7,500 miles up to higher-mileage cars · sources: Honest John road test owner comments, Honest John model overview

Wiper and washer system leaking into the footwell

Emerging

A recurring complaint is the wiper/washer mechanism failing and water finding its way in through the linkage, leaving the driver's footwell carpet damp. Owners describe having to replace the wiper motor or linkage more than once over ownership. It is a nuisance and a potential cause of electrical dampness rather than a big-ticket repair, with parts typically in the tens of pounds plus fitting.

Reported across the ownership period, not tied to one mileage band · sources: Honest John road test owner comments, Honest John model overview

Exhaust drone or resonance, especially in the wet

Disputed

Some owners note a resonant exhaust note and a feeling of reduced power when driving in wet conditions, which Honest John's own write-up ties tentatively to the same worn engine/transmission mounts rather than the exhaust itself. Because the source can't be pinned down definitively, and only a handful of owners mention it, this sits as a disputed rather than settled fault. Worth a test drive on a wet day before you buy.

Reported intermittently, cause unconfirmed · source: Honest John road test owner comments

Cabin rattles and unexplained noises developing over time

Disputed

Auto Express's long-term test of the Alto turned up what the testers called a 'mystery noise' that wasn't fully diagnosed, and trim/dash rattles are a common complaint on cheap, lightly-built city cars generally as they age. It's rarely expensive to fix but can take a few attempts to track down, and used buyers should expect some by higher mileages.

Turned up during long-term ownership, exact cause undiagnosed · source: Auto Express long-term test

Thrummy three-cylinder engine mistaken for a fault

Disputed

The 1.0-litre three-cylinder is repeatedly described in reviews as 'thrummy' next to rivals like the Hyundai i10, and some vibration and coarseness at idle and low revs is simply how the engine is. Buyers unfamiliar with three-cylinder engines sometimes assume this points to a mechanical problem when it's normal character, so it's worth a test drive to know what's typical before assuming a fault.

Normal engine character, not a defect · sources: Honest John model overview, general road test commentary

What to check on this car

Ranked from this model’s own MOT record, then from what owners report.

Saveable checklist

From this model’s MOT record

The physical checks its own defect data says are worth your time, most telling first.

Brake pipes underneathRuns high on this model Follow the metal brake lines with a torch where they run along the sills and over the rear axle. White crust or flaking metal means they are corroding, and the online MOT history usually shows the same advisory creeping up for years before the fail.Recorded on 31.9% of tests at age 10-15 · class average 6.2%
Coil springsRuns high on this model Look through the wheel spokes at the bottom coil of each spring; when springs snap it is usually there, and the break is visible. Step back and check the car sits level too. A dropped corner is often a broken spring.Recorded on 24.6% of tests at age 10-15 · class average 5.0%
Bushes and ball jointsRuns high on this model Drive slowly over broken tarmac with the windows down and listen for clonks from either end. Back at the car, have someone rock the steering wheel while you rest a hand on each front wheel; play you can feel through the tyre is a worn joint.Recorded on 24.5% of tests at age 10-15 · class average 9.0%
Rubber boots and gaitersRuns high on this model On full steering lock, look in behind each front wheel at the concertina rubber boots on the driveshafts and steering rack. Splits, or grease flung around the arch, mean dirt is getting into a joint that costs far more than the boot protecting it.Recorded on 8.4% of tests at age 10-15 · class average 1.5%
Lights and horn walkroundRuns high on this model With a helper, run every light: dipped, main beam, indicators, brake lights including the high-level one, reverse, fog, and the horn. On newer cars a dead LED section can mean replacing the whole lamp unit rather than a bulb.Recorded on 7.5% of tests at age 10-15 · class average 1.8%
Underneath, with a torchRuns high on this model Get down and look at the sills, the subframes and the rear suspension mounting points. Flaking scale and bubbling matter; light surface rust does not. On older cars this is the one check that finds the fault that scraps them.Recorded on 6.8% of tests at age 10-15 · class average 3.1%
Headlamp lensesRuns high on this model Check for condensation inside the headlamps and for cloudy or yellowed lenses. Both attract MOT trouble, and moisture inside a sealed LED unit generally means a whole new lamp.Recorded on 4.5% of tests at age 10-15 · class average 1.3%

Worth doing on any used car

These judge the seller’s upkeep rather than the model, and they are where the haggling money is.

Tyres, all four Check the tread across the full width of each tyre, inner edge included, and look for cracking and mismatched brands. A set of decent tyres is £500 or more on most cars, which makes this the easiest money to take off a price. If the pressure warning light is on, budget for sensors too.Recorded on 23.3% of tests at age 10-15 · class average 20.9%
Pads and discs Look through the wheel spokes at the brake disc. A pronounced lip on its outer edge, or a rusty and scored face, means discs and pads are due all round, a few hundred pounds on most cars. A haggling point rather than a reason to walk away.Recorded on 8.4% of tests at age 10-15 · class average 11.4%
Windscreen and wipersRuns high on this model Scan the glass in daylight for chips, especially in the driver's line of sight where even a small one can fail the MOT. Run the washers and check the wipers clear without smearing.Recorded on 5.8% of tests at age 10-15 · class average 2.0%

Because of what owners report

Drawn from the reports above rather than the MOT data. These are the model-specific ones.

Rev the engine gently in neutral and feel for excess engine movement or a clunk when you lift off. Pronounced rocking or a clunk on take-up points to worn engine or transmission mounts.
Check the driver's footwell carpet for damp, especially after rain, and run the wipers and washers through a full cycle. A soggy footwell or wipers that judder or stick suggests the wiper/washer linkage has failed and is letting water in.
If you can, test drive in the wet or listen closely for a droning exhaust note. A resonant drone with a feeling of lost power in the wet is a known but unexplained complaint on this model.
Drive over a rough or poorly surfaced road and listen for rattles from the dash and trim. Some rattling is common on higher-mileage cars and isn't usually serious, but persistent noise the seller can't explain is worth negotiating on.
Let the engine idle from cold and note the vibration level before and after it warms up. Some thrum and vibration from the three-cylinder engine is normal; harsh vibration that persists once fully warm is not.
Ask to see the service history and check mounts, wipers and exhaust hangers were looked at during servicing. A gap in history makes it harder to know if these known weak points have already been addressed.
Check the MOT history for repeat advisories in the same area. The same advisory appearing year after year means a known issue has been left unresolved rather than fixed.

Open the saveable checklist, tick it off at the car

The MOT data

Measured

Computed from DVSA MOT results, all of Great Britain, 2025. Nothing here is opinion.

How this model wears

Suzuki AltoClass average, all tracked models

What testers flag

Share of tests where each item was recorded. The dark tick is the class average across all tracked models; bars are scaled within each group.

Faults with the car itself

The rows that judge the model rather than its keeper. 40,397 tests in this band.

Brake pipe damaged or excessively corroded
Advisory
31.9%class 6.2%
A spring or spring component fractured or seriously weakened
Advisory
24.6%class 5.0%
A suspension pin, bush or joint excessively worn
Advisory
24.5%class 9.0%
A suspension component excessively damaged or corroded
Advisory
12.4%class 7.8%
A transmission shaft constant velocity joint boot severely deteriorated
Minor
8.4%class 1.5%
Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
Fail
7.5%class 1.8%
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
Fail
5.8%class 3.5%
Brake pipe damaged or excessively corroded
Fail
5.5%class 0.8%
Headlamp reflector or lens slightly defective
Minor
4.5%class 1.3%
A suspension joint dust cover severely deteriorated
Minor
4.1%class 1.4%

Wear, upkeep and luck

Tyres, pads and stone chips say more about how the car was driven and maintained than about how it was built.

Tyre tread depth not in accordance with the requirements
Advisory
26.1%class 23.4%
A tyre seriously damaged
Advisory
17.5%class 9.7%
Brake disc or drum excessively weakened, insecure or fractured
Advisory
8.4%class 11.4%
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
Minor
6.1%class 3.3%
Wiper blade missing or obviously not clearing the windscreen
Fail
5.8%class 2.0%
A brake lining or pad worn below 1.5mm
Advisory
5.1%class 7.3%
Tyre tread depth not in accordance with the requirements
Fail
3.6%class 2.6%
Wiper blade defective
Minor
2.6%class 0.9%

Others in its class

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