Audi A4 buying guide (Ireland, 2026)
What a used Audi A4 costs in Ireland, how it does at the NCT, what goes wrong and what it costs to fix. Based on 534 for sale right now.
Executive car See every executive car's typical price.
Our take on the Audi A4
A 2023 Audi A4 typically advertises at €35,950 and a 2018 one at €18,000, so it loses roughly 13% of its value a year at that age. Most for sale are diesels (83%), which suit longer, regular drives; for mostly short trips a petrol is the safer buy. At the NCT, the 2007–2008 cars fail more often than other cars the same year, so a fresh NCT is worth paying a little more for. The 2.0 diesel is the most common engine (84% of those with a known engine), and it usually lasts around 280k km.
Check a Audi A4's priceNCT pass rate by year
Used Audi A4 prices by year
Typical asking price by registration year, and typical mileage. Private sellers usually take 5–10% less than asking; expect dealers to be a little dearer.
| Year | Typical price | Typical mileage | For sale |
|---|---|---|---|
| 2024 | €37,950 | 70k km | 48 |
| 2023 | €35,950 | 81k km | 70 |
| 2022 | €30,000 | 109k km | 37 |
| 2021 | €28,950 | 108k km | 35 |
| 2020 | €22,950 | 160k km | 18 |
| 2019 | €22,950 | 143k km | 32 |
| 2018 | €18,000 | 160k km | 52 |
| 2017 | €15,500 | 185k km | 80 |
| 2016 | €13,950 | 174k km | 47 |
| 2015 | €9,950 | 223k km | 31 |
| 2014 | €10,000 | 209k km | 12 |
| 2013 | €6,500 | 291k km | 14 |
| 2012 | €5,500 | 257k km | 15 |
| 2011 | €6,500 | 272k km | 14 |
| 2010 | €3,450 | 238k km | 7 |
| 2009 | €2,600 | 349k km | 7 |
| 2008 | €2,800 | 330k km | 8 |
Audi A4 NCT pass rate
How often Audi A4s pass their NCT first time, compared with other cars the same year (Road Safety Authority (RSA), NCT make & model data 2025, initial tests).
| Year | Pass first time | Other cars, same year | |
|---|---|---|---|
| 2021 | 77% | 80% | |
| 2020 | 78% | 75% | |
| 2019 | 71% | 74% | |
| 2018 | 68% | 67% | |
| 2017 | 64% | 64% | |
| 2016 | 55% | 55% | |
| 2015 | 51% | 53% | |
| 2014 | 53% | 51% | |
| 2013 | 48% | 46% | |
| 2012 | 46% | 42% | |
| 2011 | 35% | 38% | |
| 2010 | 32% | 34% | |
| 2009 | 29% | 31% | |
| 2008 | 24% | 30% | |
| 2007 | 25% | 31% |
Most common reasons a 2018 Audi A4 fails: wheels & tyres (11% of tests), safety equipment (7.9% of tests, more than most cars), shock absorbers (6.9% of tests, more than most cars), steering & suspension (6.2% of tests).
Cheap fixes before the NCT (eBay.ie): Tyre tread depth gaugeWiper blades for the Audi A4
Common Audi A4 problems
Known weak spots to check before you buy, with typical Irish garage costs if the problem is there.
DSG gearbox mechatronic / clutch (7-speed) · €900–€2,200
In slow traffic and reversing, watch for jerks, clunks or a slipping feeling. A flashing gear display means it's in limp mode.
EGR / DPF blocking (1.6/2.0 TDI) · €300–€900
Ask how it's driven: short trips clog the DPF. Any DPF/engine light, limp mode, or heavy smoke when revved is a warning.
Timing belt history · €350–€700
Ask when the timing belt and water pump were last done (usually every 160,000 km or 5–6 years). No proof = budget for it.
Engines and how long they last
| Engine | Usually lasts | Motor tax / year | For sale |
|---|---|---|---|
| 2.0 Diesel | ~280k km | ~€270 | 310 |
| 2.0 Petrol | ~300k km | ~€600 | 35 |
| 1.4 Petrol | ~300k km | ~€280 | 26 |
2.0 Diesel: usual problem: oil pump drive and cracked heads.
"Usually lasts" is the mileage these engines commonly reach before major work; service history matters more than the number.
Parts and upgrades for the Audi A4
Parts for the Audi A4 on eBay.ie
New and used parts from Irish and UK sellers. Check the part number or fit before you buy.
Brake padsCheck front or rear, and the disc size if there are twoSee on eBay.ie →
Brake discsReplace in pairs, with new padsSee on eBay.ie →
Oil filterChange it at every oil serviceSee on eBay.ie →
Wiper bladesSplit or smearing blades can fail the NCTSee on eBay.ie →
BulbsA blown bulb is an easy NCT failSee on eBay.ie →
BatteryCheck the size and terminal layoutSee on eBay.ie →
OBD2 fault code readerReads engine fault codes on your phoneSee on eBay.ie →Example photos, not the exact product (Wikimedia Commons): Treemonster86, CC BY-SA 3.0; Tharish, CC BY-SA 3.0; Dvortygirl, CC BY-SA 3.0; Wesha, Public domain; Mib18, CC BY-SA 3.0; Cjp24, CC BY-SA 4.0; Arp, Public domain.
Upgrades for the Audi A4
Popular add-ons. The mats are made for this model; the rest fit most cars. More car accessories →
Floor matsMade to fit the Audi A4See on eBay.ie →
CarPlay screenAdds Apple CarPlay (and usually Android Auto) to a car without it: sits on the dashSee on eBay.ie →
Wireless CarPlay adapterFor cars that already have CarPlay with a cableSee on eBay.ie →
Reversing cameraMakes parking easier; some CarPlay screens come with oneSee on eBay.ie →
Phone holderKeeps your phone off your lap for directionsSee on eBay.ie →
Dash camFootage settles insurance arguments quicklySee on eBay.ie →Example photos, not the exact product (Wikimedia Commons): Keystones, CC BY-SA 3.0; Butterhimmel, CC BY-SA 4.0; Sunnyboy122, CC0; https://www.flickr.com/photos/banoootah_qtr/, CC BY 2.0; Shixart1985, CC BY 2.0; Ellin Beltz, CC BY-SA 3.0.
Before you buy a used Audi A4
Run a history check on the reg (write-off, finance owing, mileage), ask when the timing belt was done and for receipts, and start it from cold yourself. The used car checklist takes you through a viewing step by step.