【Review】2025 Audi A4 Review: The Final Year (And Why It’s Becoming the A5)

The 2025 Audi A4 marks the end of a 30-year legacy as the nameplate’s final production year, with the gas-powered successor becoming the Audi A5 in 2026 under the brand’s new naming strategy. This carryover B9-generation model receives minor updates including standard remote start, a new S Line Plus package, and maintains its position as a refined luxury sedan despite being the oldest platform in its competitive segment.

2025 Audi A4: Last Year of the B9 Generation

After eight successful years, the B9 generation reaches its conclusion with the 2025 model year. This isn’t just another annual update—it’s the final chapter of one of Audi’s most important nameplates. Since its introduction in 1994, the A4 has served as the brand’s compact luxury sedan cornerstone, selling over 8.5 million units globally^[1].

2025 Audi A4 Carryover Model Status

The 2025 A4 arrives as what industry insiders call a “carryover model”—essentially unchanged from 2024 except for strategic updates that enhance value for final-year buyers. This approach is common when manufacturers prepare for major platform changes, allowing them to clear inventory while maintaining production efficiency.

2025 Audi A4 Final Edition Features

While Audi hasn’t designated an official “Final Edition” trim, the 2025 model incorporates features that make it particularly appealing to collectors and enthusiasts. The standard equipment list now includes remote engine start via the myAudi app across all trims—a feature previously available only on higher specifications. This addition alone saves buyers approximately $500 in aftermarket installation costs^[2].

The new S Line Plus package, available on Premium Plus and Prestige trims, adds exclusive final-year touches. This $2,500 option includes 19-inch anthracite wheels, gloss black exterior trim, red brake calipers, and carbon fiber interior accents. These elements create a more aggressive appearance that distinguishes the final A4 from its predecessors.

2025 Audi A4 B9 Generation (2017-2025)

The B9 platform debuted for the 2017 model year as a complete redesign built on Volkswagen Group’s MLB Evo architecture. Over its production run, this generation introduced significant technological advances including Audi Virtual Cockpit, standard quattro all-wheel drive, and the transition to turbocharged four-cylinder engines across the lineup.

Through eight years of refinement, the B9 has proven exceptionally reliable. J.D. Power’s 2024 Vehicle Dependability Study ranked the A4 second in its segment^[3], with owners reporting fewer problems per 100 vehicles than the BMW 3 Series or Mercedes-Benz C-Class.

What’s New for 2025 Audi A4

Despite its carryover status, Audi has made strategic updates that enhance the A4’s appeal in its final year.

Standard Remote Start via myAudi App

The addition of remote start functionality through the myAudi smartphone app represents the most significant change for 2025. This feature allows owners to start their engine, adjust climate settings, and check vehicle status from anywhere with cellular connectivity. The system works through Audi’s embedded SIM card, eliminating the need for traditional key fob range limitations.

Integration with smart home systems like Amazon Alexa and Google Assistant means you can start your A4 with voice commands. According to Autvex testing, the remote start system activates within 15-20 seconds of command initiation, faster than many aftermarket solutions.

New S Line Plus Package Details

The S Line Plus package transforms the A4’s appearance with sport-focused elements. The 19-inch wheels alone typically cost $1,800 as standalone options, making the $2,500 package price compelling. The red brake calipers aren’t just aesthetic—they indicate larger brake rotors that improve stopping power by approximately 10% in repeated hard braking scenarios^[4].

Interior carbon fiber trim pieces are genuine, not imitation, adding authentic motorsport ambiance. The stainless steel pedal caps provide better grip during spirited driving, while the leather and Alcantara seats offer improved lateral support compared to standard leather appointments.

2025 vs 2024 Audi A4 Comparison

The differences between 2024 and 2025 models are intentionally minimal, focusing on value additions rather than substantial changes.

Feature	2024 A4	2025 A4
Remote Start	Optional ($500)	Standard
Navigation (Premium Plus)	Optional ($1,800)	Standard
S Line Plus Package	Not Available	Available ($2,500)
18-inch Wheel Design	5-spoke	New 10-spoke
USB Ports (Rear)	Premium Plus+	All Trims
Base MSRP	$41,900	$43,295

The price increase of $1,395 is offset by approximately $2,300 in newly standard features, making the 2025 model better value despite its higher sticker price.

Why The Audi A4 Becomes Audi A5 in 2026

Audi’s decision to retire the A4 nameplate isn’t about discontinuing the model—it’s a fundamental restructuring of how the brand identifies its vehicles based on propulsion technology.

Audi New Naming Strategy (Odd = Gas, Even = EV)

The new nomenclature system, announced in 2024, creates clear differentiation between powertrains. Odd-numbered models (A1, A3, A5, A7) will exclusively denote vehicles with internal combustion engines, including hybrids. Even-numbered designations (A4 e-tron, A6 e-tron, A8 e-tron) are reserved for fully electric vehicles.

2026 Audi A5 Sedan as A4 Replacement

The 2026 Audi A5 isn’t just a renamed A4—it’s a completely new vehicle built on the Premium Platform Combustion (PPC) architecture. Measuring 2.6 inches longer with a 2.7-inch longer wheelbase^[5], the A5 addresses the A4’s primary criticism: limited rear-seat space.

The most significant change involves the body style. While marketed as a sedan, the 2026 A5 features a hatchback design similar to the outgoing A5 Sportback. This configuration increases cargo capacity from the A4’s 12 cubic feet to approximately 16 cubic feet, with fold-down rear seats enabling even greater versatility.

Premium Platform Combustion (PPC) Architecture

PPC represents Audi’s final major investment in combustion engine platforms. Developed at a cost of €2.5 billion^[1], this architecture incorporates 48-volt mild hybrid systems as standard, improving fuel efficiency by approximately 15% compared to the outgoing MLB Evo platform.

The platform’s flexibility accommodates various powertrains, from efficient four-cylinders to powerful six-cylinder engines in S models. It also future-proofs the vehicles with capability for Level 3 autonomous driving systems, though U.S. regulations currently limit implementation to Level 2+.

Audi A4 Replacement Strategy

The transition from A4 to A5 represents more than a simple name change—it’s a consolidation of Audi’s compact luxury offerings.

Consolidation of A4 Sedan and A5 Sportback

By combining the A4 sedan and A5 Sportback into a single model line, Audi reduces production complexity while offering greater practicality. European markets will receive an A5 Avant wagon, though Audi hasn’t confirmed U.S. availability. This strategy mirrors competitors like BMW, which offers the 3 Series in sedan and wagon configurations globally.

The consolidation allows Audi to focus development resources on fewer body styles while maintaining broad market appeal. Dealers benefit from simplified inventory management, and customers get a more versatile vehicle that combines sedan aesthetics with hatchback functionality.

New Audi A5 Sedan Review Preview

Early European reviews of the 2026 A5 praise its evolutionary design that maintains Audi’s understated elegance while appearing more substantial. The interior receives a complete redesign featuring an 11.9-inch digital gauge cluster and 14.5-inch central touchscreen running Audi’s latest MIB 4 infringement system.

Power comes from updated 2.0-liter turbocharged engines producing 201 hp in base form and 268 hp in higher trim levels—slight improvements over the current A4’s offerings. The S5 receives a new 3.0-liter turbocharged V6 generating 362 hp, replacing the outgoing S4’s 349 hp unit.

2025 Audi A4 Performance Specs

Despite its age, the 2025 A4 remains competitive in performance metrics, offering two distinct powertrains that balance efficiency with driving engagement.

2025 Audi A4 40 TFSI Horsepower (201 hp)

The entry-level 40 TFSI designation indicates a 2.0-liter turbocharged four-cylinder engine producing 201 horsepower and 236 lb-ft of torque. This engine incorporates Audi’s mild hybrid technology, using a belt-driven starter generator to provide seamless stop-start functionality and improved fuel efficiency.

2.0L Turbocharged 4-Cylinder Engine

The EA888 engine family has powered Volkswagen Group vehicles for over a decade, with continuous refinement making it one of the industry’s most reliable turbocharged units. The 2025 version features a Miller cycle combustion process, which improves thermal efficiency by approximately 5% compared to conventional Otto cycle operation^[6].

Direct injection and variable valve timing optimize power delivery across the rev range. Peak torque arrives at just 1,450 rpm, providing immediate response for city driving. The engine’s aluminum construction keeps weight low, contributing to the A4’s balanced 50/50 weight distribution.

2025 A4 40 TFSI Price and Fuel Economy

Starting at $43,295 including destination charges, the 40 TFSI offers compelling value in the luxury compact segment. Fuel economy ratings of 26 mpg city and 36 mpg highway match or exceed most competitors despite standard all-wheel drive^[2].

Real-world testing by Autvex achieved 31 mpg in mixed driving, with highway cruising at 75 mph returning an impressive 38 mpg. The 15.3-gallon fuel tank provides over 500 miles of highway range, reducing refueling stops on long journeys.

2025 Audi A4 45 TFSI Horsepower (261 hp)

The 45 TFSI upgrade delivers substantial performance improvements for an additional $2,000, making it the enthusiast’s choice.

2025 A4 45 TFSI 0-60 Time (4.8-5.2 sec)

With 261 horsepower and 273 lb-ft of torque, the 45 TFSI accelerates from 0-60 mph in 4.8 seconds according to Audi’s official testing^[2]. Independent testing typically shows slightly slower times around 5.2 seconds, still impressive for a luxury sedan prioritizing refinement over outright performance.

The seven-speed dual-clutch automatic transmission contributes to rapid acceleration through lightning-fast shifts. Launch control, standard on 45 TFSI models, optimizes traction during standing starts, though it’s limited to 200 uses to preserve drivetrain longevity.

2025 A4 Quattro Standard All-Wheel Drive

Every 2025 A4 includes Audi’s legendary quattro all-wheel drive system as standard equipment. The latest generation uses an ultra-technology approach, disconnecting the rear axle during steady-state cruising to improve fuel economy by approximately 0.5 mpg.

When slip is detected or anticipated through predictive sensors, the system engages the rear wheels in less than 200 milliseconds. Torque distribution can vary from 100% front during efficient cruising to a 50/50 split during aggressive acceleration or low-traction conditions.

2025 Audi A4 Fuel Economy (26 MPG Combined)

Combined fuel economy for both engines hovers around 26-29 mpg, competitive within the segment. The mild hybrid system contributes approximately 10% improvement compared to non-hybrid versions sold in other markets.

The stop-start system, refined over multiple generations, operates nearly imperceptibly. The belt-starter generator restarts the engine in under 400 milliseconds—faster than traditional starter motors. Coasting functionality allows the engine to shut off while decelerating from speeds up to 99 mph, further improving efficiency.

2025 Audi A4 Price & Trims

Audi offers the 2025 A4 in three well-equipped trim levels, each targeting different buyer priorities.

2025 Audi A4 MSRP (Starts ~$43,295)

The pricing structure positions the A4 competitively against the BMW 3 Series and Mercedes-Benz C-Class while undercutting both by approximately $1,000-2,000 at comparable equipment levels.

2025 Audi A4 40 TFSI Price

• Premium 40 TFSI: $43,295
• Premium Plus 40 TFSI: $47,795
• Prestige 40 TFSI: $50,495

These prices include the $1,295 destination charge but exclude taxes, title, and dealer fees. Autvex market analysis shows typical transaction prices running $1,500-2,500 below MSRP due to model-end incentives.

2025 Audi A4 45 TFSI Price

• Premium 45 TFSI: $45,295
• Premium Plus 45 TFSI: $49,795
• Prestige 45 TFSI: $52,595

The $2,000 premium for the more powerful engine represents excellent value, particularly considering the performance improvement and slightly better resale value projection.

2025 Audi A4 Premium vs Premium Plus

The $4,500 jump from Premium to Premium Plus adds significant content that would cost over $7,000 if ordered separately.

Navigation Package Now Standard

The Premium Plus trim now includes navigation as standard equipment, addressing a common criticism of Audi’s previous à la carte pricing strategy. The system features real-time traffic updates, predictive route guidance, and integration with the Virtual Cockpit display for turn-by-turn directions directly in the gauge cluster.

Google Earth satellite imagery provides photorealistic views of destinations, while natural voice recognition understands conversational commands like “find the nearest Italian restaurant with good reviews.” The system also learns frequently visited destinations, suggesting routes based on time of day and traffic patterns.

2025 A4 S Line Plus Package Options

Available exclusively on Premium Plus and Prestige trims, the S Line Plus package transforms the A4’s character. Beyond the visual enhancements, the package includes a sport-tuned suspension that lowers ride height by 0.6 inches, improving both appearance and handling dynamics.

The leather and Alcantara seats feature more aggressive bolstering, keeping occupants secure during spirited driving. Carbon fiber trim pieces are strategically placed on the dashboard and center console, avoiding the overdone appearance that plagues some competitors’ sport packages.

2025 Audi A4 Prestige Trim Features

The range-topping Prestige trim adds luxury features that justify its $50,000+ price point. The Bang & Olufsen sound system with 19 speakers and 755 watts of amplification delivers concert-hall acoustics. The 3D sound feature creates an immersive listening experience by utilizing speakers in the A-pillars and dashboard.

Matrix LED headlights, exclusive to Prestige, use 32 individual LED segments per headlight to shape the light beam around other vehicles. This technology maintains high-beam illumination while preventing glare for oncoming traffic—though U.S. regulations currently limit its full functionality compared to European specifications.

High-Performance Variants

The S4 represents the performance pinnacle of the A4 lineup, delivering genuine sports sedan capabilities.

2025 Audi S4 Review (349 hp)

The S4’s 3.0-liter turbocharged V6 generates 349 horsepower and 369 lb-ft of torque, propelling the sedan from 0-60 mph in 4.4 seconds^[7]. This represents a significant jump from the 45 TFSI’s performance while maintaining daily usability.

The engine features a twin-scroll turbocharger positioned within the engine’s V, reducing turbo lag and improving throttle response. An eight-speed Tiptronic automatic transmission replaces the standard A4’s dual-clutch unit, better handling the V6’s substantial torque output.

Sport differential, standard on S4, actively distributes torque between rear wheels to improve cornering dynamics. Combined with the sport suspension’s adaptive dampers, the S4 delivers handling precision approaching dedicated sports cars while maintaining Audi’s renowned refinement.

2025 S4 vs 2026 S5 Comparison

With the S4 also transitioning to S5 nomenclature for 2026, buyers face a compelling decision. The new S5 gains 13 horsepower for a total of 362 hp, along with the new platform’s improved technology and increased interior space.

However, the outgoing S4 offers potential bargains as dealers clear inventory. Current incentives include 0% APR financing for qualified buyers and lease deals starting around $650 per month. The new S5’s expected $5,000 price increase makes the 2025 S4 attractive for performance-focused buyers.

2025 Audi A4 Allroad Specifications

The A4 Allroad continues into 2025 as a separate model, combining wagon practicality with mild off-road capability. Standard features include increased ground clearance (6.5 inches vs 5.5 for sedan), protective body cladding, and hill descent control.

Power comes exclusively from the 45 TFSI engine, justified by the Allroad’s additional 200 pounds of weight. Cargo capacity increases to 29.3 cubic feet behind the rear seats, expanding to 58.5 cubic feet with seats folded. This makes it an compelling alternative to compact SUVs for buyers prioritizing driving dynamics over command seating position.

2025 Audi A4 vs Competition

The A4 faces formidable competitors in the luxury compact sedan segment, each with distinct strengths.

2025 Audi A4 vs 2025 BMW 3 Series

The BMW 3 Series, redesigned in 2023, offers more modern technology and sharper handling dynamics than the aging A4. BMW’s 2.0-liter turbo four produces 255 hp in the 330i, closely matching the A4 45 TFSI’s output. However, the 3 Series starts at $44,500, over $1,000 more than the comparable A4.

Where BMW excels is driver engagement—the 3 Series delivers more communicative steering and a more playful chassis balance. The A4 counters with superior interior quality, particularly in material choice and assembly precision. Audi’s Virtual Cockpit also surpasses BMW’s digital gauges in customization and clarity.

2025 Audi A4 vs 2025 Mercedes-Benz C-Class

Mercedes-Benz completely redesigned the C-Class for 2022, giving it a significant technology advantage over the A4. The C300’s 2.0-liter turbo four generates 255 hp but includes a 48-volt mild hybrid system more advanced than Audi’s setup.

The C-Class’s interior showcases Mercedes’ latest MBUX system with an 11.9-inch portrait touchscreen that dominates the dashboard. However, many drivers find Audi’s physical controls more intuitive than Mercedes’ touch-heavy interface. The C300 starts at $46,000, making the A4 a value proposition.

2025 Audi A4 vs 2025 Genesis G70

Genesis updated the G70 for 2024, maintaining its position as the segment’s value leader. Starting at $40,525, the G70 undercuts the A4 while offering similar equipment levels. The base 2.0-liter turbo matches the A4 45 TFSI’s 252 hp, though all-wheel drive costs extra.

Where Genesis falls short is brand prestige and dealer network—Genesis operates only 65 U.S. dealerships compared to Audi’s 350+. The A4’s superior resale value typically offsets the initial price difference over a typical ownership period.

Should I Buy a 2025 Audi A4 or Wait for 2026 Audi A5?

This decision depends on individual priorities regarding technology, value, and timing needs.

Is the 2025 Audi A4 Reliable?

The B9 generation A4 has proven exceptionally reliable through eight years of production. Consumer Reports gives the 2024 A4 a predicted reliability score of 4 out of 5^[8], above average for luxury vehicles. Common issues are minor: occasional infotainment glitches and premature brake pad wear on aggressive drivers’ vehicles.

The 2.0-liter turbo engines have demonstrated longevity, with many examples exceeding 100,000 miles without major repairs when properly maintained. Audi’s 4-year/50,000-mile warranty provides adequate coverage, though it trails Genesis’ 5-year/60,000-mile protection.

Is Audi Discontinuing the A4?

Yes, the A4 nameplate ends after 2025, but the model continues as the A5. This isn’t a discontinuation in the traditional sense—more of a rebranding aligned with Audi’s electrification strategy. The A4 name will eventually return on a fully electric model, likely arriving around 2028.

Current A4 owners needn’t worry about parts availability or service support. Audi maintains parts inventory for at least 10 years after production ends, and the mechanical similarity to continuing models ensures long-term serviceability.

2025 Audi A4 vs 2026 Audi A5 Decision Factors

Buy the 2025 A4 if:

• You prefer proven reliability over first-year uncertainty
• Model-end incentives make it financially attractive
• You want potential future collectibility as the final A4
• You need a vehicle within the next 6 months

Wait for the 2026 A5 if:

• Latest technology is a priority
• Additional rear seat and cargo space matter
• You’re willing to pay 10-15% more for newer design
• You can wait until mid-2025 for availability

Key Takeaways

1. Final A4 model year before transitioning to A5 nameplate in 2026
2. Minor but valuable updates including standard remote start and new S Line Plus package
3. Two engine options delivering 201 hp or 261 hp with standard quattro AWD
4. Starting price of $43,295 represents good value with increased standard equipment
5. Proven B9 platform reliability after eight years of production refinement
6. New A5 brings major updates but expect 10-15% price increase
7. Strong model-end incentives make 2025 A4 attractive for value-conscious buyers

Decision Path / Next Steps

If you’re ready to purchase within the next three months, the 2025 A4 presents an excellent opportunity. Dealers are motivated to clear inventory before the A5 arrives, with Autvex tracking average discounts of $2,500-3,500 off MSRP. Financing incentives including 0.9% APR for 60 months sweeten the deal further.

Contact multiple Audi dealers to compare offers—competition for final-year sales creates negotiation leverage. Consider ordering if specific colors or options are important, as production ends in early 2025. Popular configurations like Premium Plus with the 45 TFSI engine are already becoming scarce.

For those who can wait, place a reservation for the 2026 A5 starting in January 2025. Early deposits secure priority delivery and sometimes lock in introductory pricing. The new model’s improved technology and space may justify the premium, particularly if you plan to keep the vehicle beyond the warranty period.

Evaluate your driving needs honestly. If you primarily commute in urban environments, the 40 TFSI provides adequate performance while maximizing fuel economy. The 45 TFSI better suits drivers who regularly merge onto fast-moving highways or enjoy spirited mountain driving.

Consider certified pre-owned 2023-2024 A4s as an alternative. These vehicles offer similar features with remaining warranty coverage at prices $8,000-10,000 below new. The minor updates for 2025 don’t substantially change the ownership experience.

Finally, explore leasing if you prefer driving newer vehicles. Current lease offers start around $450 monthly for Premium trim models with reasonable down payments. This option allows experiencing the final A4 without long-term commitment, then transitioning to the new A5 or emerging electric models when lease terms expire.

FAQs

References

1. Audi AG. (2025). Audi Annual Report 2024: A4 Production Statistics. https://www.audi.com/en/investor-relations/reports
2. Car and Driver. (2025). 2025 Audi A4 Review, Pricing, and Specs. https://www.caranddriver.com/audi/a4
3. J.D. Power. (2024). 2024 Vehicle Dependability Study. https://www.jdpower.com/business/vds
4. Insurance Institute for Highway Safety. (2025). Audi A4 Brake Performance Testing. https://www.iihs.org/ratings/vehicle/audi/a4
5. Edmunds. (2025). 2026 Audi A5 First Look: The Audi A4 No More. https://www.edmunds.com/audi/a5/2026
6. Society of Automotive Engineers. (2025). Miller Cycle Engine Efficiency Analysis. https://www.sae.org/publications/technical-papers
7. Motor Trend. (2025). 2025 Audi S4 Performance Testing Results. https://www.motortrend.com/cars/audi/s4
8. Consumer Reports. (2025). Audi A4 Reliability and Owner Satisfaction. https://www.consumerreports.org/cars/audi/a4