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  3. AUDI 4H188030138M

AUDI 4H188030138M Lower Steering Knee

fits model: A8. make: Audi. year: 2015–2018.

4h188030138m Audi 2015 - 2018 A8 Lower Under Steering Knee Plastic Oem

( Manufacturer Part Number: 4H188030138M ), ( Part Type: Steering Knee ), ( Oe/oem Part Number: 4h0 941 531 F ), ( Country Of Origin: Germany )

Review AUDI Lower Under Steering Knee Plastic Oem fits A8 2015–2018

The **Audi 4H188030138M (2015 2018 A8 Lower Steering Knee)** is a high-quality, precision-engineered suspension component designed to ensure optimal handling, stability, and ride comfort in Audi s luxury sedan lineup. This lower steering knee, also known as a lower control arm or tie rod end, plays a critical role in maintaining the alignment and structural integrity of the vehicle s steering and suspension system. Crafted from durable, high-grade materials likely forged steel or reinforced aluminum this part is engineered to withstand the demands of daily driving, including sharp turns, uneven road surfaces, and varying load conditions. Its robust construction minimizes flex and wear, reducing the risk of premature failure and ensuring consistent steering response, even under heavy acceleration or braking. The **4H188030138M** is specifically tailored to fit the **2015 through 2018 Audi A8 models**, including both the **A8 L and A8 L W12** variants, making it a direct OEM replacement that restores factory-level performance and reliability. Whether replacing a worn-out component or upgrading for enhanced durability, this steering knee integrates seamlessly with the vehicle s existing suspension geometry, helping to preserve the A8 s signature blend of precision engineering and refined driving dynamics. Its compatibility with Audi s advanced suspension systems such as the **adaptive air suspension** ensures that the steering remains responsive and the ride remains smooth, even when navigating complex driving conditions. For owners seeking to maintain their Audi s premium performance or restore it to like-new condition, this part represents a critical investment in long-term vehicle health and driving enjoyment.

### **Pros and Cons of Buying a 2015 2018 Audi A8 (4H188030138M) with a Lowered Steering Knee**

#### **Pros**

1. **Luxury and Comfort**

The Audi A8 is a premium sedan known for its high-quality interior materials, spacious cabin, and refined ride quality. The 2015 2018 models feature advanced sound insulation, heated/ventilated seats, and a quiet, smooth ride, making long drives comfortable.

2. **Performance and Engineering**

The A8 offers strong performance options, including the **3.0L V6 (306 hp)** and **4.0L V8 (420 hp in the S8)**. The **quattro all-wheel-drive system** ensures excellent traction in various conditions. The **8-speed Tiptronic transmission** provides smooth shifting, and the **adaptive suspension** (available in higher trims) enhances handling.

3. **Technology and Infotainment**

The A8 comes with Audi s **MMI infotainment system**, which integrates seamlessly with **Audi connect** for navigation, Bluetooth, and smartphone integration. Higher trims (like the **A8L 4.0T) include a **12.3-inch touchscreen**, **virtual cockpit**, and **premium audio systems** (Bose or Harman Kardon).

4. **Safety Features**

The A8 is equipped with **standard advanced safety tech**, including:

- **Adaptive cruise control (ACC)**

- **Lane-keeping assist (LKA)**

- **Blind-spot monitoring**

- **Automatic emergency braking (AEB)**

- **Multiple airbags and stability control**

These features make it one of the safest luxury sedans in its class.

5. **Resale Value**

Audi maintains strong resale value, especially for well-maintained models. The A8, being a flagship model, holds its worth better than many competitors.

6. **Lowered Steering Knee (Performance Modification)**

- A **lowered steering knee** (common in aftermarket tuning) can improve **driver engagement** by lowering the steering wheel height, making the car feel more sporty.

- Some drivers prefer the **lowered stance** for a more aggressive appearance.

- If properly installed, it may slightly improve **cornering feel** by reducing wheelbase height.

7. **Reliability (Compared to Peers)**

While no car is perfect, the **A8 s 3.0L V6 and 4.0L V8 engines** are generally reliable if maintained properly. The **quattro system** is robust, and the **automatic transmission** (when serviced) performs well. However, **electrical gremlins** (common in Audis) and **suspension wear** (especially with a lowered setup) should be monitored.

---

#### **Cons**

1. **High Maintenance Costs**

Audi parts and labor are **expensive**, especially for **suspension, electrical, and transmission issues**. A lowered steering knee setup may accelerate **suspension wear**, leading to **shock absorber and bushings replacement** sooner than expected.

2. **Electrical Issues**

The A8, like many Audis, is prone to **electrical problems**, including:

- **Faulty sensors** (e.g., wheel speed, camshaft)

- **Infotainment glitches** (MMI system freezes or lag)

- **Window regulator failures**

These issues can be costly to diagnose and repair.

3. **Transmission Problems (Especially in Older Models)**

Some **2015 2017 A8s** have reported **transmission hesitation, rough shifting, or failure** in the **8-speed Tiptronic**. While not universal, this is a known concern that may require **pre-purchase inspection (PPI)**.

4. **Suspension and Handling Trade-offs**

- A **lowered steering knee** can lead to:

- **Stiffer ride quality** (less comfort on rough roads)

- **Increased body roll** (reduced stability at high speeds)

- **Potential alignment issues** (worn tires or uneven wear)

- The stock A8 already has a **softer suspension** for luxury, so modifications may make it feel **less refined**.

5. **Fuel Economy Concerns**

The **V6 and V8 engines** are not fuel-efficient. Expect:

- **V6 (3.0L):** 18 20 MPG city / 25 28 MPG highway

- **V8 (4.0L):** 15 17 MPG city / 22 25 MPG highway

Higher fuel costs add up over time.

6. **Depreciation and Market Demand**

While Audi retains value, the **A8 is not as popular as a used luxury buy** compared to **BMW 7 Series or Mercedes E-Class**. This means **lower trade-in values** and **fewer used market options** for future upgrades.

7. **Potential Modification Risks**

- A **lowered steering knee** (if done improperly) can:

- **Void the warranty** (if not factory-installed)

- **Cause steering misalignment** (leading to uneven tire wear)

- **Affect airbag deployment** (if the steering column is modified)

- Aftermarket parts may **lack long-term durability** compared to OEM components.

8. **Space and Practicality Trade-offs**

- The **A8 is long and heavy**, which can make **parking and maneuvering in tight spaces** more difficult.

- The **trunk space is decent but not as large as some competitors** (e.g., Mercedes E-Class).

---

### **Conclusion**

The **2015 2018 Audi A8 (4H188030138M) with a lowered steering knee** is a **luxury sedan with strong performance, safety, and comfort**, but it comes with **higher ownership costs, potential reliability concerns, and trade-offs in ride quality** due to the modification.

**If you prioritize:**

**Premium comfort, tech, and brand prestige** The A8 is an excellent choice.

**Sportier handling and driver engagement** The lowered steering knee enhances this.

**Long-term reliability** Ensure **full service history, no transmission/electrical issues, and proper suspension maintenance**.

**If you are concerned about:**

**High maintenance costs** Budget for **expensive repairs** (especially suspension, electrical, and transmission).

**Ride comfort** A lowered setup may make the car **stiffer and less smooth** on highways.

**Fuel efficiency** Expect **higher running costs** compared to smaller luxury sedans.

---

### **Recommendation**

**Buy the Audi A8 if:**

- You have **a budget for maintenance** and can afford **potential suspension/electrical repairs**.

- You **prioritize luxury, safety, and performance** over fuel economy.

- The **lowered steering knee** is **properly installed** (preferably by a reputable tuner) and **does not compromise safety**.

- You **inspect the car thoroughly** (pre-purchase inspection is **highly recommended**) for:

- **Transmission smoothness**

- **Electrical system functionality**

- **Suspension and steering alignment**

- **Service records** (especially for **timing belt, shocks, and bushings**)

**Avoid or reconsider if:**

- You **cannot afford unexpected repairs** (Audi parts are expensive).

- The **modification history is unclear** (especially if the lowered steering knee was done by an unqualified shop).

- You **prefer a more fuel-efficient or practical luxury sedan** (consider a **BMW 5 Series, Mercedes E-Class, or Lexus LS** instead).

**Final Verdict:**

The **2015 2018 A8 with a lowered steering knee is a great choice for those who want a **luxury performance sedan** and can handle its **higher ownership costs**. However, **due diligence in inspection and maintenance planning is crucial** to avoid costly surprises. If you re willing to invest in its upkeep, it remains one of the most **comfortable, safe, and engaging** luxury sedans in its class.

Details:

The part number 4H188030138M corresponds to the manufacturer number, and 4H0 941 531 F is OE/OEM. The product is an OEM lower under steering knee plastic part for the 2015 - 2018 Audi A8.

part #: 4h188030138m prices

  • $24.00-$64.99

specifications cartrimmouldings:

  • for models: A8
  • for makes: Audi
  • for years: 2015-2018
  • mpn: 4h188030138m
  • part type: Steering Knee
  • oe/oem part number: 4h0 941 531 F
  • country of origin: Germany

seller cartrimmouldings:

  • # reviews: 414
  • rating: 100.0%
  • city: Berkeley height, New Jersey

offer cartrimmouldings:

  • quantity: 1
  • sold: 0
  • best offers: True
  • options: Ship-to-home
  • availability: In Stock
  • started: May 23, 2026

general cartrimmouldings:

  • Car Truck Parts Accessories > Exterior Parts Accessories > Body Moldings Trims
  • condition: Used

shipping cartrimmouldings:

  • transit: 5-10 Days
  • type: Calculated
  • cost: $6.72
  • carrier: USPS
  • service: USPS Ground Advantage
  • class: Standard

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for models: a8, for makes: audi, for years: 2015-2018, part type: steering knee, oe/oem part number: 4h0 941 531 f, country of origin: germany,
category: auto parts > car truck parts accessories > exterior parts accessories > body moldings trims, sku: 15667106519510872,
Audi 4H188030138M Is Similar To:
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5 offers $24.00–$64.99 USD
  • Used. Offer #1 priced at $62.40 + $0.00 shipping estimate = $62.40* total. Receipts are available upon request. 2011 AUDI A8.FREE SHIPPING
  • Used. Offer #2 priced at $64.99 + $9.35 shipping estimate = $74.34* total. +$9.35 shipping
  • Used. Offer #3 priced at $24.00 + $10.00 shipping estimate = $34.00* total. All electronics are tested before removed from vehicle. Item may show light scuffs, scratches or other imperfections as a result of this being a used part.+$10.00 shipping
  • Used. Offer #4 priced at $36.00 + $25.00 shipping estimate = $61.00* total. +$25.00 shipping
  • Used. Offer #5 priced at $60.00 + $6.72 shipping estimate = $66.72* total. The part number corresponds to the manufacturer part number, and 4H0 941 531 F is the OE/OEM part number The product is an OEM lower under steering knee plastic part for the 2015-2018 Audi A8.+$6.72 shipping

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