Audi A4 reliability, MOT pass rate and rarity

Time Period & Model

Time period snapshot: Last 5 years

Manufacturer: Audi

Model: A4

Model reliability rank

MOT-based rank from 1,645,273 selected-period tests.

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Overall MOT pass rate

78.0%

Share of this model's 1,645,273 selected-period MOT tests that pass.

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Efficiency, emissions & tax

Average MPG

46.4 mpg

CO2 emission

147 g/km

Euro emissions

Euro 6

Tax cost

£220/yr

Vehicle list price over £40,000?NoYes

Average vehicle miles

123,128

Solid average mileage for this model.

Life expectancy miles

134,639

Moderate mature-fleet mileage expectation.

Average vehicle age

13.6

Comfortable mid-life age pattern.

Vehicles represented

215,005

215,000 valid MOT, 5 under 3 years.

Tests analysed

1,645,273

1,645,273 MOT tests in the selected period.

Rarity ranking

Based on Make & Model

Common

215,005On the road

Insight summary

Audi A4 is a common model in this snapshot, with 215,005 represented vehicles and 0.52% of the active UK pool tracked by AutoRank. For the last 5 years, it has a pass rate of 78.0% from 1,645,273 MOT tests, with a reliability score of 55. The current pool shows an average of 123,128 miles and an average age of 13.6 years, while mature-fleet mileage is estimated at 134,639 miles. Diesel leads the fuel split, followed by petrol, and the most frequent defect themes are windscreen damage, coil springs and tyre condition. The practical read is that the Audi A4 looks like a solid used-car baseline rather than a rare find, with age, mileage and common wear items doing most of the explaining.

Fuel type breakdown (by model)

Fuel	Vehicles
DIESEL	145,212
PETROL	69,768
OTHER	8
HYBRID ELECTRIC (CLEAN)	6
LPG	6
GAS BI-FUEL	3
ELECTRIC	2

Euro NCAP Safety

No NCAP tests found for this model.

Top 25 most common defects (by model)

Defect	Count
Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))	34,635
Offside Rear Coil spring fractured or broken (5.3.1 (b) (i))	21,336
Nearside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))	19,254
Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i))	17,470
Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))	14,625
Nearside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))	14,228
Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g))	14,050
Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))	13,476
Offside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))	12,310
Nearside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))	11,985
Offside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))	11,702
Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))	10,211
Nearside Rear Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))	9,936
Nearside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e))	9,794
Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))	9,496
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))	9,084
Offside Rear Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))	8,429
Anti-lock braking system warning lamp indicates an ABS fault (1.6 (b))	8,127
Offside Rear Shock absorbers has a serious fluid leak (5.3.2 (b))	7,580
Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	7,539
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))	7,474
Offside Front Lower Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))	7,311
Nearside Rear Shock absorbers has a serious fluid leak (5.3.2 (b))	7,286
Offside Front Coil spring fractured or broken (5.3.1 (b) (i))	7,231
Parking brake efficiency below requirements (1.4.2 (a) (i))	7,220

All 25 defects ranked by recorded countShowing 301,789 defects across this top 25 set

Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))

34,635

Offside Rear Coil spring fractured or broken (5.3.1 (b) (i))

21,336

Nearside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))

19,254

Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i))

17,470

Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))

14,625

Nearside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

14,228

Engine MIL inoperative or indicates a malfunction (8.2.2.2 (g))

14,050

Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))

13,476

Offside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

12,310

Nearside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

11,985

Offside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

11,702

Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))

10,211

Nearside Rear Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

9,936

Nearside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e))

9,794

Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))

9,496

Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))

9,084

Offside Rear Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

8,429

Anti-lock braking system warning lamp indicates an ABS fault (1.6 (b))

8,127

Offside Rear Shock absorbers has a serious fluid leak (5.3.2 (b))

7,580

Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))

7,539

Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))

7,474

Offside Front Lower Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))

7,311

Nearside Rear Shock absorbers has a serious fluid leak (5.3.2 (b))

7,286

Offside Front Coil spring fractured or broken (5.3.1 (b) (i))

7,231

Parking brake efficiency below requirements (1.4.2 (a) (i))

7,220

Audi A4 reliability and MOT data