Used Audi A8 D4 (2011-2017): Buyer's Guide

The 2013 Audi A8 has roughly three and a half times more owner complaints on file than the 2017, and both cars share the same D4 platform, the same MMI electronics architecture, and mostly the same engine choices. That gap is the whole story of buying a used A8 D4: this generation rewards patience with model years and punishes buyers who grab the first cheap one they find. A flagship Audi sedan that starts around $8,000 to $15,000 for early cars is one of the best depreciation plays in used luxury. It's also a car where the air suspension, the MMI screen, and the timing chain tensioner can each turn that bargain into a five-figure repair bill if you buy the wrong engine, the wrong year, or skip the inspection. This guide breaks down all five engines Audi put in the D4 over its seven-year US run, which years to chase, and which one to walk away from.

This Generation at a Glance

The D4 is the third generation of the A8, sold in the US from the 2011 through 2017 model years before the D5 replaced it. Audi refreshed the D4 for 2014 with updated LED lighting, a revised grille, and the current-generation MMI, and used the same basic architecture through the end of the run. Underneath, this is a genuinely five-engine generation: a naturally aspirated V8 gave way to a supercharged V6 and turbocharged V8 partway through, a naturally aspirated W12 sat at the top of the range for most of the run, and a diesel V6 came and went in the middle of the dieselgate scandal. All-wheel drive (quattro) was standard across every engine and trim sold in the US.

Cross-shopped against its era's other German flagships, the A8 was consistently the lowest-volume seller of the three, well behind the Mercedes-Benz S-Class and BMW 7 Series. That low volume is exactly why it depreciates harder and buys more car per dollar used: fewer new buyers chasing it new means steeper discounts once it's five to ten years old, but it also means a thinner pool of independent shops with deep D4 experience compared to 7 Series or S-Class specialists in most cities. Budget extra time to find a shop that knows this platform specifically.

Current pricing and inventory: Audi A8 market data, with per-year pages for 2013, 2014, 2015, 2016, and 2017.

Powertrain & Trim Breakdown

Five engines across seven model years means the D4's reliability story isn't one story, it's five. Skip straight to the engine you're actually cross-shopping; each section below stands on its own.

4.2L FSI V8 (2011-2012)

The launch engine for the D4, and the only naturally aspirated V8 offered on this generation. It's mechanically straightforward by A8 standards: no turbos or superchargers to fail, no forced-induction plumbing. Owners on AudiWorld's D4 platform forum report the same pattern seen on other direct-injection Audi V8s from this era: carbon buildup on the intake valves over time (direct injection means no fuel washing the valves clean), plus valve cover and cam cover oil seepage that gets worse with age. The bigger risk is oil consumption on neglected examples. Ignored long enough, low oil starves the turbo... except there's no turbo here, so on the 4.2 the real consequence is bearing wear and, in the worst cases, engine damage from running low. This is a "watch the dipstick" engine more than a "watch for one specific failure" engine. A recall (NHTSA campaign 16V619000) covers early D4 production built between May 2010 and May 2012 for a coolant valve that can leak into the engine control module and cause a stall; ask whether it was completed before you buy a 2011 or 2012 car.

3.0L TFSI Supercharged V6 (2013-2017)

Audi swapped the base engine for 2013, and the supercharged 3.0T became the volume engine for the rest of the D4's life. It's smoother and more efficient than the 4.2 it replaced, and forum consensus on AudiWorld and Audizine points to the same two recurring issues as the related 4.0T: carbon buildup on the intake valves (same direct-injection tradeoff as the 4.2) and, on higher-mileage cars, timing chain tensioner wear. The tensioner keeps chain slack in check on start-up; when it wears out, the chain can jump timing or, in worse cases, contact other components. Dedicated tensioner-failure threads on Audi enthusiast forums go back years and span multiple Audi models sharing this engine family, which is why it's worth treating as a real risk rather than an internet rumor. A cold start that rattles for a second or two before smoothing out is the classic early symptom.

4.0L TFSI Twin-Turbo V8 (2013-2017)

The performance option below the W12, standard on some upper trims and optional elsewhere, mostly paired with the long-wheelbase A8L. Same engine family concerns as the 3.0T: carbon buildup and timing chain tensioner wear, plus the added complexity of two turbochargers and their oil and coolant lines. Owners who track high-mileage D4s report that once a car crosses roughly 100,000 miles without full service records, repair costs escalate quickly, since tensioner and turbo work on this engine both mean substantial labor. A full-service history with documented oil changes on a consistent interval is the single best predictor of whether a 4.0T will be cheap or expensive to own.

6.3L FSI W12 (2013-2016, A8L Only)

The W12 is naturally aspirated, not turbocharged, which removes one whole category of failure point compared to the 4.0T. It's also low-volume: W12 A8Ls were never common new and are scarce used, which cuts both ways. Owners on AudiWorld's dedicated D4 W12 thread describe the engine itself as mechanically sound, with the real ownership cost being parts availability and specialist labor rather than a single notorious failure. Budget accordingly: this is a 12-cylinder engine with 12 coils, 12 injectors, and a timing chain arrangement no independent shop wants to touch without W12-specific experience. If you're cross-shopping a W12 against a 4.0T at similar mileage, the W12 is usually the mechanically simpler bet, but only if you can find a shop willing to service it.

3.0L TDI Diesel V6 (2014-2016)

The most efficient engine in the lineup by a wide margin, at 28 mpg combined against 19-22 for the gas V8s. It's also the engine tangled up in Volkswagen Group's diesel emissions scandal. Audi's 3.0-liter TDI V6, offered in the A8L TDI for the 2014 through 2016 model years, was named in the 2015-2016 defeat-device findings and the resulting Department of Justice consent decree; affected owners were offered a buyback, lease termination, or an emissions fix plus cash compensation. Audi stopped selling the TDI in the US after the 2016 model year as a direct result. Many of these cars were bought back and no longer exist on the used market; if you do find one, it should already be running the post-settlement emissions software, since that was a condition of resale. Treat any TDI A8 you're considering as a special case and ask for the emissions modification paperwork specifically, not just a general service history.

Trim Levels

Audi also sold the A8 in two body lengths: the standard-wheelbase A8 and the long-wheelbase A8L, which adds roughly 5 inches of rear legroom. By the final two model years, Audi had quietly dropped the short A8 from the US lineup: EPA data for 2016 and 2017 shows only A8L trims sold here, so if you're shopping 2016-2017, you're shopping A8L exclusively. Earlier years offered both.

Beyond trim, the equipment worth chasing is adaptive air suspension with continuous damping control (bundled into Premium Plus and above), which rides noticeably better than the base setup, and the Bang & Olufsen sound system on Prestige cars, which owners consistently cite as one of the best factory systems of this era. Night vision assist and the massaging seats are genuinely nice but rarely change a buying decision. Cold Weather and Advanced Key packages show up often on used listings too; heated rear seats and keyless entry/start are worth having if you live somewhere winter is real, but neither is worth chasing down a specific car for. What is worth paying extra for: full service records over any single feature. A Premium Plus with a stack of Audi dealer invoices beats a loaded Prestige with an unknown history every time on this platform.

Which Model Years to Target Within This Gen

2013 is the year to be most careful with. It carries the highest complaint count in CarScout's NHTSA-sourced data (49 complaints, versus 18 in 2014) and it's also the transition year where four different engines briefly overlapped in production, which forum threads point to as a factor in early build-quality inconsistency. 2017 is the opposite case: fewest complaints, most mature software, and by that point Audi had years to iron out the MMI and air suspension quirks that plagued earlier cars. If you want the most efficient engine and don't mind the emissions-settlement history, 2016 TDI cars can be a genuine value play, but confirm the post-settlement fix was applied before you buy.

Current CarScout listing counts back this up: 2015 shows the deepest inventory of the five linkable years at 46 active listings, while 2013 and 2016 sit closer to 22-23. Asking prices climb steadily with model year too, from roughly $2,950-$18,995 on 2013 cars up to $13,996-$35,995 on 2017s, so the newest, most reliable year also carries the smallest discount versus its original sticker. That tradeoff is worth weighing against how much risk you're willing to inspect your way around on an older, cheaper car.

Pre-Purchase Inspection Checklist

All engines:

• Pull up and hold in park, then watch the air suspension settle. It should rise evenly on all four corners within a few seconds. A corner that sags overnight or takes noticeably longer than the others points to a leaking strut, and a leaking strut is what eventually kills the compressor too.
• Cycle the MMI screen open and closed. A mechanical clicking sound as it finishes opening is a known wear pattern on the screen motor; a full freeze on the Audi splash screen or a reboot loop points to the navigation drive's fiber-optic ring failing.
• Ask for full service records, specifically oil change intervals. On a direct-injection Audi V8, sporadic oil changes are the single best predictor of expensive carbon buildup and valve work down the road.
• Confirm whether recall work (16V619000 for 2011-2013 cars, 19V035000 for 2015-2017 cars) was completed, using the VIN, not just the model year.

3.0T and 4.0T specific:

• Start the engine cold and listen for a rattle in the first one to two seconds that fades as the engine warms up. That's the classic early sign of timing chain tensioner wear. It doesn't mean immediate failure, but it means budget for the repair.
• On the 4.0T, ask about turbo service history. Twin-turbo setups on any Audi from this era benefit from a mechanic-verified boost and vacuum check during a PPI.

W12 specific:

• Confirm the shop that's serviced it has W12-specific experience. A dealer-only service history is a strong positive signal given how few independent shops work on this engine regularly.
• Check that all 12 ignition coils and injectors are firing evenly; a slight miss under load is cheaper to diagnose before purchase than after.

TDI specific:

• Request documentation that the emissions modification under the 2015-2016 settlement was completed. This should exist for any TDI still legally on the road.
• Check for DEF (diesel exhaust fluid) system fault codes; the post-settlement software changes touch this system directly.

Every car, before you sign anything:

• Check tire wear across all four corners. Staggered wheel setups mean the rears wear differently from the fronts, and mismatched tire ages can mask an alignment problem caused by worn suspension bushings.
• Verify the battery holds a charge without the car running. The D4 puts the battery in the trunk rather than the engine bay, and a weak one drags down electrical systems that are already complex enough on this platform.

Run every VIN through a recall check regardless of which engine you're considering.

Running Costs

General Audi A8 Quattro maintenance averages around $455 a year for routine service, but that figure doesn't include the items that define ownership of this platform. An air suspension strut replacement runs roughly $4,300 to $4,500 for the pair plus alignment, and letting a leaking strut run long enough to burn out the compressor adds another $2,000-plus repair on top. Brake rotor and pad jobs run a few hundred dollars more than a mainstream sedan because of the car's weight and staggered wheel setup, and staggered tires mean you can't rotate front to back, so expect to replace all four around the same interval rather than stretching them out in pairs. None of this is unusual for a German flagship; it's the reason these cars are cheap to buy and expensive to keep. Set aside a real maintenance fund before you buy rather than after the first big bill arrives, and factor the ownership cost into your offer on the car itself.

FAQ

Is the Audi A8 D4 3.0T supercharged V6 reliable? It's the most common engine in this generation and generally solid when maintained on schedule, but timing chain tensioner wear and intake carbon buildup are known issues on higher-mileage cars. A cold-start rattle that fades as the engine warms is the tell to listen for during a test drive, and a documented oil-change history matters more than any single spec sheet number.

What year Audi A8 D4 should I avoid? 2013 has the highest owner-complaint count in CarScout's NHTSA-sourced data, both in raw volume and relative to nearby years, and it's the transition year where four engines briefly overlapped in production. 2011-2012 cars also carry a coolant-valve recall worth confirming before purchase, since both years predate CarScout's collected market data entirely.

How many miles does an Audi A8 D4 last? Well-maintained examples with documented service histories regularly reach 150,000-plus miles. Owners who track high-mileage D4s consistently point to service records, not mileage alone, as the real predictor of whether a car stays affordable to own past that point. Neglected cars tend to hit expensive trouble well before that mark.

Is the Audi A8 D4 TDI diesel worth buying used? Only if you confirm the post-settlement emissions fix was completed. The 3.0L TDI, sold 2014-2016, was part of Volkswagen Group's diesel emissions settlement, and Audi discontinued US diesel sales afterward as a direct result. The engine itself returns the best fuel economy in the lineup at 28 mpg combined, well ahead of any gas engine offered.

Should I buy the standard A8 or the long-wheelbase A8L? By 2016-2017, Audi only sold the A8L in the US, so that choice is made for you on later cars. On 2013-2015 models where both existed, the A8L adds meaningful rear legroom for a modest price premium and is the more common configuration on the used market today, which also makes it easier to find.

Bottom Line

The 2017 Audi A8L with the 3.0T V6 is the sweet spot in this generation: fewest owner complaints on record, most mature MMI software, and the least mechanically complex of the post-facelift engines. Whatever year or engine you land on, don't skip the air suspension check and don't buy without full service records. Run every VIN through a recall check before you commit. CarScout members can track price drops on specific A8 D4 trims and years at usecarscout.com.

Data sourced from NHTSA recalls database, EPA fuel economy data, and real owner experiences from AudiWorld's A8/S8 D4 Platform Discussion forum, Audizine's D4/D5 A8/S8 forum, and CarComplaints.com. See the full Audi A8 market data for pricing and inventory.