Is the Audi A4 ULEZ compliant?

Most petrol Audi A4s from 2006 and diesels from September 2015 meet the Euro standards for London ULEZ and other UK clean-air zones, so they are generally exempt from the daily charge. Pure-electric versions are always exempt.

What insurance group is the Audi A4 in?

The Audi A4 sits in insurance group 32 of 50. Your actual premium still depends on age, postcode, annual mileage and no-claims history.

Is the Audi A4 reliable?

Our reliability score for the Audi A4 is 65 out of 100 (about average), derived from DVSA MOT records, with a first-time MOT pass rate of about 84% at the reference age.

What economy does the Audi A4 get?

Expect roughly around 48 mpg combined for a typical Audi A4, based on official figures and our running-cost model. Real-world figures vary with driving style, load and conditions.

What are the common problems on the Audi A4?

On the Audi A4, the issues that come up most by mileage include Tyres & wheels, Suspension and Brakes. The section above breaks down each one with its typical mileage, repair cost and severity.

How many Audi A4s are on UK roads?

About 245,940 Audi A4s are currently taxed and on the road in the UK, from DfT vehicle-licensing data.

Is the Audi A4 reliable?

The Audi A4 scores 65/100 on Forecourt's MOT-based reliability measure, ahead of 41% of the cars we track. That is computed from 7,316,086 real DVSA MOT test results.

How much does a used Audi A4 cost?

A 2023 Audi A4 with around 34,362 miles is worth roughly £22,600 today (typical range £20,400–£24,800). Dealer forecourt prices sit higher and part-exchange offers lower; newer or lower-mileage examples cost more.

How quickly does the Audi A4 depreciate?

A new Audi A4 typically loses about 44% of its value over the first three years, then depreciates more slowly. Buying at three to five years old avoids the steepest part of the curve.

What insurance group is the Audi A4?

The Audi A4 sits in insurance group 32 of 50 — the more expensive end of the scale. Exact premiums depend on the trim (some versions sit a few groups higher or lower), your age, postcode and no-claims history.

What goes wrong on a used Audi A4?

The most common age-related issues we track for the Audi A4 are: tyres & wheels (typically around over 100k miles, £80-£500 to put right); suspension (typically around over 100k miles, £150-£450 to put right); brakes (typically around over 100k miles, £150-£500 to put right). A full service history and a recent MOT with no advisories are the best protection.

What does the Audi A4 cost to run?

Expect around 48 mpg combined, £195 a year in road tax, about £290 for a standard annual service. The full cost-of-ownership table above breaks this down per year and per mile for the exact year and mileage you choose.

Ranked #40 car in the UK · Saloon · 594 units sold last year

Audi A4

The B9-generation Audi A4 (2016-2024, facelifted in 2019) is the understated executive saloon - less overtly sporty than a 3 Series, but with one of the best-built cabins in the class and Audi's crisp Virtual Cockpit dials. The 35/40 TFSI petrols and the frugal 2.0 TDI diesel do most of the work, paired with a smooth S tronic dual-clutch or a manual. A quietly capable motorway car that holds its money on the strength of the four-ring badge.

Body: Saloon
Years: 2018–2024
Fuel: Petrol / Diesel / Mild Hybrid
Economy: 48 mpg
Insurance: Group 32

The short version

24/100

Forecourt score

Value 32 · Reliability 21 · Insurance 16

The Audi A4 loses value faster than most cars and costs about average to run. Its MOT-based reliability is average, 65 out of 100, ahead of 21% of the cars we track. On three-year value retention it ranks better than 32% of models.

The Forecourt score blends how this car ranks against the catalogue on value retention, reliability and insurance cost (weighted 40/40/20). Higher is better; running cost is not yet folded in.

Pick your version

Fuel

Mild Hybrid · 1968cc

Power

204 ps

Drivetrain

AWD

Cam drive

Dry belt

Quoted MPG

50 mpg

The volume A4 (used market). 2.0L TDI mHEV, 204 PS, 7-speed S tronic, quattro AWD. 7.7s 0-62. 50+ mpg achievable. S Line. Discontinued from new 2024 — replaced by A5 saloon.

Tell us about the one you're looking at

Year of registration2023

20182024

Mileage on the clock34,362 mi

0Expected: 34,362180k

Conditiongood

PoorFairGoodExcellent

Tidy and well looked-after for its age — the typical car.

Region

Remembered as you browse other cars.

Know the registration?

Optional — fills in the exact year and ULEZ status for your specific car. The registration isn’t stored.

Estimated market value

£22,600

Range £19,050 – £26,400

medium confidence

When new (2023)£42,500Age-based value£23,800Mileage adjustment+£0Condition & region+£19Market calibration+£281Forecourt price£24,100Private sale£21,100Part-exchange£18,600

Holdthis 3-year-old

Fair value — the 4-year mark is the sweet spot.

At 34,362 miles it’s below the ~44,244 typical for a 3-year-old — a well-kept reading.

Seen one for sale?

A data-led guide from the depreciation curve, UK parc trend and reliability — not financial advice.

The depreciation curve

How a 2023-registration Audi A4 loses value over time.

Marker = your selection
Dashed = mileage either side

What it costs to own

Over

Based on the 2023 car with 34,362 miles you entered above — worth about £22,600 today — here is the cost of owning it for the next 5 years, at roughly 11,454 miles a year.

5-year total

£25,177

Per year

£5,035

All-in per mile

£0.44

Fuel per mile

14.5p

Depreciation£6,159

Fuel / energy£8,313

Servicing£2,570

Road tax£975

Insurance£7,160

Best age to buy — around 4 years

A 4-year-old example loses roughly £2,850 a year — under half the £8,800 a one-year-old sheds. The steepest drop is behind it.

Uses current UK pump and home-charging prices (DESNZ weekly), typical-driver insurance and manufacturer service intervals. "Fuel per mile" is just the energy input — so an EV at ~9p and a diesel at ~22p make running-cost comparison direct. A guide; your own costs will vary.

How it compares

Where this car ranks against the 340 vehicles in our index — higher is better.

Holds its valuebetter than 32%

Reliabilitybetter than 21%

Fuel economybetter than 67%

Cheap to insurebetter than 16%

Percentile rank across our full index. A measure is shown only where the data spreads meaningfully across the index.

Petrol, diesel, hybrid or EV?

How the available versions compare on price, running cost, and the headaches each tends to develop.

A4 (used market) / RS4 Avant

Audi's executive saloon/estate — discontinued from new 2024 (Audi now uses A5 nomenclature for this segment). Cross-shop BMW 3 Series, Mercedes C-Class, Volvo S60/V60. Used A4 market remains active. RS4 Avant is the cult premium hot estate.

New price: £50,000
Annual fuel / energy: £1,700
3-yr depreciation: 49%

Watch for

·DISCONTINUED 2024 from new — replaced by A5 saloon
·Some 2.0 TDI had EGR cooler failures (campaign-fixed)
·RS4 tyre wear quick

Fuel/energy costs based on this week’s UK averages (w/c 22/06/2026) · Petrol 153.3p/L, Diesel 172.5p/L, Electricity 27.0p/kWh · DESNZ

Estimated insurance

Group 32 of 50 (upper-mid — pricier to insure) · Comprehensive · 3 years NCB

Indicative annual comprehensive premiums for this car, by driver age band and risk profile. Pick the combination closest to your circumstances.

No-claims bonus3 years

0 yearsBaseline: 3 years15+

Risk profile:

Estimated annual premium · typical, age 33-39

£1,432/ year

Roughly £119 per month

Typical

Average UK driver — 3 years NCB, average postcode, no recent claims.

Age band	Lower risk	Typical	Higher risk
Age 17-25	£3,265	£4,081	£5,306
Age 26-32	£1,704	£2,005	£2,446
Age 33-39Selected	£1,260	£1,432	£1,690
Age 40-49	£1,070	£1,189	£1,379
Age 50+	£954	£1,060	£1,250

How we estimate this

Indicative annual comprehensive premium estimates. The 'Typical' figure represents an average UK driver in each age band; Lower and Higher risk show the realistic spread driven by factors UK insurers legitimately price on (postcode, occupation, claims history, NCB, voluntary excess, modifications). Based on 10,000 miles/yr, £250 voluntary excess, and the no-claims bonus selected above. Always get individual quotes before buying.

Expected annual costs

Adjust the annual mileage to match how you'll actually use the car. Insurance is what you selected above (age 33-39, typical risk, 3 yrs NCB).

Annual mileage11,454 mi/yr

2,000UK avg for this model: 11,45430,000

Routine service

£290

Annual main-dealer service

Major service

£280

Every 2 years, annualised

Road tax

£195

Standard rate, post year-one

Fuel

£1,552

48 mpg, £1.49/L

Insurance

£1,432

Age 33-39, group 32

Clean-air zones

✓ ULEZ compliant

Mild Hybrid variants are compliant with London ULEZ and all UK clean-air zones.
All petrol variants meet Euro 4 standards and are ULEZ compliant.

Based on London ULEZ standards — Birmingham, Bath, Bristol, Sheffield, Glasgow and other UK clean-air zones generally follow the same rules.

Total expected£3,749 / year

Excludes depreciation and unscheduled repairs (see next section).

Unexpected costs

What out-of-warranty repairs typically run, by mileage band. Your selected mileage is highlighted.

0-30k miles

£120

per year · low risk

30-60k miles

£360

per year · low risk

60-100k miles

£780

per year · medium risk

100k+ miles

£1,350

per year · high risk

Tyres

205/60 R16 · 225/50 R17 · 245/40 R18

What a full set of four will cost you (including fit and balance), and which brand each tier of buyer should pick. A typical set lasts about 24,000 miles.

Budget

£300

set of 4, fitted · £60 per tyre

Mid-range

£440

set of 4, fitted · £95 per tyre

Premium

£620

set of 4, fitted · £140 per tyre

What to fit

Optional extras worth paying for

Factory options ranked by how much of their original cost they recover at resale. Anything above 70% return tends to make money back; below 40% is paying for your own enjoyment.

Option	New cost	Added used value	Return
Tow bar (factory-fit) Niche, but the buyers who want one will pay for it.	£650	£450	69%
Parking sensors & reversing camera Near-expected now — its absence costs more than its presence returns.	£500	£300	60%
Heated seats / cold-weather pack	£450	£200	44%
Adaptive / matrix LED headlights	£900	£400	44%
Metallic or premium paint Almost universal — an unusual colour is the bigger resale risk.	£600	£200	33%
Panoramic / opening roof	£1,100	£350	32%
Advanced driver-assistance pack	£1,500	£450	30%
Larger alloy wheels	£700	£200	29%
Premium sound system	£800	£200	25%

Parts most likely to fail

Drawn from owner reports and warranty data. Filtered for relevance to 34,362 miles.

Watch now

Failure typically happens around your current mileage.

Upcoming

A known weak point — but you haven't reached its usual mileage yet.

Already due

Past its usual failure mileage. Either already fixed, or about to.

Tyres & wheelsUpcoming

Typical at over 100k milesCost £80-£500medium severityParts high

Recorded in 7.4% of MOT tests over 100k miles — from 7,248,137 DVSA MOT tests analysed.

SuspensionUpcoming

Typical at over 100k milesCost £150-£450medium severityParts high

Recorded in 10.7% of MOT tests over 100k miles — from 7,248,137 DVSA MOT tests analysed.

BrakesUpcoming

Typical at over 100k milesCost £150-£500medium severityParts high

Recorded in 7.4% of MOT tests over 100k miles — from 7,248,137 DVSA MOT tests analysed.

Lighting & signallingUpcoming

Typical at over 100k milesCost £15-£120medium severityParts high

Recorded in 6.9% of MOT tests over 100k miles — from 7,248,137 DVSA MOT tests analysed.

Driver's viewUpcoming

Typical at over 100k milesCost £60-£300low severityParts high

Recorded in 3.1% of MOT tests over 100k miles — from 7,248,137 DVSA MOT tests analysed.

Identification & otherUpcoming

Typical at over 100k milesCost £20-£150low severityParts high

Recorded in 2.9% of MOT tests over 100k miles — from 7,248,137 DVSA MOT tests analysed.

"Parts low/medium/high" indicates how easy the replacement part is to source — discontinued or specialist parts mean longer workshop time and bigger bills.

MOT outlook

How this model fares at its MOT as it ages — from 7,316,086 real DVSA test records.

MOT pass rate by age

86.3% at 3yr → 71.6% at 25yr

A 3-year-old A4 passes its MOT 86.3% of the time; by 25 years that has slipped to 71.6%. The y-axis is zoomed to this model’s range so the trend is readable.

Longevity

0%of 31-year-old examples are still taxed and on the road — a useful read on how well the model lasts.

From 12,605 vehicles registered in 1995.

Survival by registration year

0% of 1995 cars still on the road

Each point is one registration cohort. Older cars on the left, newer on the right. A flatter line means the model holds up over time; a steep drop means cohorts disappear from UK roads faster.

What’s on the road

The fuel-type split of every A4 currently MOT’d in the UK. From 643,193 vehicles.

Diesel 61.9%
Petrol 37.8%

Common MOT failures by mileage

The defect categories this A4 fails on most often, and how the failure rate climbs as the miles add up — from the same DVSA test records.

Category	0-30k	30-60k	60-100k	100k+
Tyres & wheels	5%	5%	6%	7%
Suspension	1%	2%	5%	11%
Brakes	1%	2%	4%	7%
Lighting & signalling	1%	1%	3%	7%
Driver's view	1%	1%	2%	3%
Identification & other	1%	1%	2%	3%

Share of MOT tests in each mileage band with at least one defect in that category. The peak band for each is highlighted.

Typical mileage by age

The average odometer reading for a A4 at MOT, by age — measured from the same DVSA records, not assumed. A useful yardstick for whether a given car has done more or fewer miles than its age suggests.

0 yr51,111
1 yr35,512
2 yr39,946
3 yr44,244
4 yr54,887
5 yr64,729
6 yr74,793
7 yr84,741
8 yr94,521
9 yr103,739
10 yr112,274
11 yr119,641

Mean recorded mileage at MOT by vehicle age, from DVSA test records (ages with at least 10 tests shown).

Reliability

65/ 100

Average

Composite of MOT pass rate, defect prevalence and cohort survival from 7,248,137 tests — high confidence.

MOT outlook · age 5 years

84%first-time pass rate

41th percentile — Below catalogue average

Based on 523,699 MOT tests · ranked against 248 catalogue models with comparable data

Where this car sits in the catalogue

Pass-rate distribution across 248 catalogue models

Things owners say

01The 2.0 TDI is the long-distance pick - relaxed and 50+ mpg on a run; the 35 TFSI petrol suits lower-mileage town use.
02S tronic dual-clutch gearboxes want their fluid changed on schedule - check the service history before buying.
03Pre-2019 cars use the older rotary-controlled MMI; the facelift's touchscreen feels far more current.

Safety recalls

Manufacturers occasionally issue safety recalls to fix a fault free of charge. You can check whether the Audi A4, or your exact vehicle, has any outstanding recalls on the official DVSA service.

Check on GOV.UK

Opens the Driver & Vehicle Standards Agency recall checker. Choose the make, model and year of manufacture — no registration needed.

Theft risk

A general indicator from UK 2025 theft data and this car’s characteristics — not a prediction for any one vehicle.

Whole-car theft

Higher

The Audi A4 is frequently targeted by thieves (UK 2025 data). Keyless entry on later cars makes relay theft the usual method.

Parts theft

Higher

Hybrid versions are a catalytic-converter target — a hybrid cat is rich in precious metals and can be cut out in about a minute.

Worth doing

Keep keys in a Faraday pouch and away from the front door to block relay attacks.
A catalytic-converter guard or forensic marking makes a hybrid far less appealing to cut.
A visible steering lock is a cheap, strong deterrent on a frequently-targeted car.

Clean-air zones

Whether driving a Audi A4 into a UK clean-air zone will cost you anything. Rules use the same Euro standard across most zones — petrol from 2006 and diesel from 2015 onwards are exempt; pure electric is always exempt.

Charging zones for cars

City	Area	Daily charge	Likely outcome
London	All of Greater London (within the M25)	£12.50	Likely exempt Diesel from September 2015 meets Euro 6.
Birmingham	Inside the A4540 Middleway	£8.00	Likely exempt Diesel from September 2015 meets Euro 6.
Bristol	City centre and part of the Portway	£9.00	Likely exempt Diesel from September 2015 meets Euro 6.
Glasgow	City centre	—	Likely exempt Diesel from September 2015 meets Euro 6.
Edinburgh	City centre	—	Likely exempt Diesel from September 2015 meets Euro 6.
Aberdeen	City centre	—	Likely exempt Diesel from September 2015 meets Euro 6.
Dundee	City centre	—	Likely exempt Diesel from September 2015 meets Euro 6.

Zones that don't charge private cars

Bath — City centre (Private cars and motorbikes are not charged).
Bradford — Outer ring road and the Aire Valley (Private cars are not charged).
Sheffield — Inside the A61 inner ring road (Private cars are not charged).
Newcastle & Gateshead — City centres and the Tyne, Swing, High Level and Redheugh bridges (Private cars are not charged).
Portsmouth — Part of the city centre (Applies to taxis, PHVs, buses, coaches and HGVs only).

Model-level guidance only. To check a specific registration, use the official gov.uk clean-air zone checker. Zone charges and boundaries are set by local councils and change over time.

Servicing & the dealer network

How well-supported Audi is across the UK — a practical read on how easy servicing, parts and warranty work will be to find.

Franchised UK dealers

~115

Large network

Premium mainstream

Network size relative to the UK's largest (Audi is 2.6% of all franchised outlets)

Servicing, parts and warranty work are easy to find UK-wide, and most independent garages know the brand well — which keeps maintenance competitive.

For context, the UK has roughly 4,500 franchised car-dealer outlets in total, plus about 15,500 independent garages.

Approximate figures, curated from public UK industry sources (NFDA, Car Dealer Magazine). Franchised networks shrink year on year — these indicate network size, not an exact count.

Dimensions & weight

Length

4,700 mm

Width

1,840 mm

Height

1,450 mm

Kerb weight

1,550 kg

Boot

460–480 L

Fuel tank

48 L

How many are still out there

Of every Audi A4 ever registered in the UK, this is what's actively on the road, parked off the road on a SORN, or gone for good.

Total ever registered

367,995

Currently taxed & on road

245,940

67% of all registered

SORN (off road)

44,633

12% of all registered

Scrapped or exported

77,422

UK fleet trend — 2014 to 2025

-6.6% vs 2024

338,992245,940

Source: DfT VEH0124 vehicle licensing statistics (year-end 2025) · Updated 1 Jul 2026

Common questions

Audi A4, answered

Is the Audi A4 ULEZ compliant?: Most petrol Audi A4s from 2006 and diesels from September 2015 meet the Euro standards for London ULEZ and other UK clean-air zones, so they are generally exempt from the daily charge. Pure-electric versions are always exempt.
What insurance group is the Audi A4 in?: The Audi A4 sits in insurance group 32 of 50. Your actual premium still depends on age, postcode, annual mileage and no-claims history.
Is the Audi A4 reliable?: Our reliability score for the Audi A4 is 65 out of 100 (about average), derived from DVSA MOT records, with a first-time MOT pass rate of about 84% at the reference age.
What economy does the Audi A4 get?: Expect roughly around 48 mpg combined for a typical Audi A4, based on official figures and our running-cost model. Real-world figures vary with driving style, load and conditions.
What are the common problems on the Audi A4?: On the Audi A4, the issues that come up most by mileage include Tyres & wheels, Suspension and Brakes. The section above breaks down each one with its typical mileage, repair cost and severity.
How many Audi A4s are on UK roads?: About 245,940 Audi A4s are currently taxed and on the road in the UK, from DfT vehicle-licensing data.

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Same underpinnings

Built on the VW MLB Evo platform

Longitudinal-engine platform for larger premium cars and SUVs. Different badges, often substantially different residuals, but broadly the same mechanicals and repair cost profile.

Volkswagen Group Modularer LÃ¤ngsbaukasten Evo · Volkswagen Group

Common questions

Audi A4, answered from the data

Is the Audi A4 reliable?: The Audi A4 scores 65/100 on Forecourt's MOT-based reliability measure, ahead of 41% of the cars we track. That is computed from 7,316,086 real DVSA MOT test results.
How much does a used Audi A4 cost?: A 2023 Audi A4 with around 34,362 miles is worth roughly £22,600 today (typical range £20,400–£24,800). Dealer forecourt prices sit higher and part-exchange offers lower; newer or lower-mileage examples cost more.
How quickly does the Audi A4 depreciate?: A new Audi A4 typically loses about 44% of its value over the first three years, then depreciates more slowly. Buying at three to five years old avoids the steepest part of the curve.
What insurance group is the Audi A4?: The Audi A4 sits in insurance group 32 of 50 — the more expensive end of the scale. Exact premiums depend on the trim (some versions sit a few groups higher or lower), your age, postcode and no-claims history.
What goes wrong on a used Audi A4?: The most common age-related issues we track for the Audi A4 are: tyres & wheels (typically around over 100k miles, £80-£500 to put right); suspension (typically around over 100k miles, £150-£450 to put right); brakes (typically around over 100k miles, £150-£500 to put right). A full service history and a recent MOT with no advisories are the best protection.
What does the Audi A4 cost to run?: Expect around 48 mpg combined, £195 a year in road tax, about £290 for a standard annual service. The full cost-of-ownership table above breaks this down per year and per mile for the exact year and mileage you choose.

Answers are generated from this car's Forecourt data — DVSA MOT records, DfT licensing statistics and our valuation model — and update with the weekly data refresh.