2007 Mercedes-Benz Allegro

Introduction

The 2007 Mercedes-Benz Allegro is a luxury sedan that offers a refined and powerful driving experience. It is available with a range of engine and transmission options, including a 3.5-liter V6 engine paired with a 7-speed automatic transmission, a 5.5-liter V8 engine paired with a 7-speed automatic transmission, and a 6.2-liter V8 engine paired with a 5-speed automatic transmission. The Allegro is praised for its comfortable interior, smooth ride, and responsive handling. However, some owners have reported issues with various components of the vehicle.

Engine

3.5-liter V6

• Oil leaks from valve cover gaskets
  • Description/Symptoms: Oil leaks from the valve cover gaskets, which can cause oil to drip onto the engine and ground.
  • Solution: Replace the valve cover gaskets.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found

5.5-liter V8

• Intake manifold failure
  • Description/Symptoms: The intake manifold may fail, causing the engine to lose power and run rough.
  • Solution: Replace the intake manifold.
  • Estimated Cost to Fix: $1,500 - $2,500
  • Recalls: None Found

6.2-liter V8

• No Issues Found

Transmission

7-speed Automatic (3.5L V6 and 5.5L V8)

• Transmission slipping
  • Description/Symptoms: The transmission may slip when shifting gears, causing a loss of power and acceleration.
  • Solution: Replace the transmission fluid and filter, or rebuild the transmission.
  • Estimated Cost to Fix: $500 - $3,000
  • Recalls: None Found
• Mechatronic unit failure
  • Description/Symptoms: The mechatronic unit, which controls the transmission, may fail, causing the transmission to malfunction or become inoperable.
  • Solution: Replace the mechatronic unit.
  • Estimated Cost to Fix: $2,500 - $4,000
  • Recalls: None Found
• Torque converter failure
  • Description/Symptoms: The torque converter may fail, causing the transmission to shudder or vibrate when shifting gears.
  • Solution: Replace the torque converter.
  • Estimated Cost to Fix: $1,000 - $2,000
  • Recalls: None Found

5-speed Automatic (6.2L V8)

• No Issues Found

Suspension

• Air suspension failure
  • Description/Symptoms: The air suspension system may fail, causing the vehicle to ride lower or become unstable.
  • Solution: Replace the air suspension components or rebuild the system.
  • Estimated Cost to Fix: $1,500 - $3,000
  • Recalls: None Found
• Strut mount failure
  • Description/Symptoms: The strut mounts may fail, causing the vehicle to handle poorly and make noise when going over bumps.
  • Solution: Replace the strut mounts.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found

Electrical

• Battery drain
  • Description/Symptoms: The battery may drain quickly, leaving the vehicle unable to start.
  • Solution: Replace the battery or diagnose and fix the electrical system.
  • Estimated Cost to Fix: $200 - $1,000
  • Recalls: None Found
• Headlight failure
  • Description/Symptoms: The headlights may fail or become dim, reducing visibility at night.
  • Solution: Replace the headlights or diagnose and fix the electrical system.
  • Estimated Cost to Fix: $500 - $1,500
  • Recalls: None Found

Exterior

• Rust on body panels
  • Description/Symptoms: Rust may develop on the body panels, particularly on areas exposed to road salt and moisture.
  • Solution: The rusted panels need to be replaced or repaired.
  • Estimated Cost to Fix: $1,000 - $3,000
  • Recalls: None Found

Interior

• Climate control panel failure
  • Description/Symptoms: The climate control panel may fail, causing the heating and air conditioning system to malfunction.
  • Solution: Replace the climate control panel or diagnose and fix the electrical system.
  • Estimated Cost to Fix: $500 - $1,500
  • Recalls: None Found

Summary

The 2007 Mercedes-Benz Allegro is a well-regarded luxury sedan, but it has also experienced some issues. The most common problems seem to be related to the transmission and suspension, with repairs ranging from relatively inexpensive to costly. Owners should be aware of these potential issues and factor them into the cost of ownership.