2018 Mercedes-Benz Gran Viale RF

The 2018 Mercedes-Benz Gran Viale RF, while not a standard production Mercedes-Benz model, is likely a customized motorhome or RV built on a Mercedes-Benz chassis, possibly a Sprinter van. Engine options for Sprinter-based RVs in 2018 typically included a 3.0-liter turbo-diesel V6 engine producing around 188 horsepower and 325 lb-ft of torque, paired with a 5-speed automatic transmission or a 7-speed automatic transmission depending on the specific chassis and configuration. Owners often appreciate the fuel efficiency of the diesel engine, the relatively compact size for maneuverability, and the Mercedes-Benz brand prestige. Common dislikes often center around the higher maintenance costs associated with the Mercedes-Benz name, and potential limitations in space and features compared to larger RVs. Keep in mind that due to the nature of custom RV builds, issues can vary widely depending on the specific upfitter and components used.

Engine

3.0L Turbo-Diesel V6

• Oil Cooler Seal Leak
  • Description/Symptoms: Oil leak near the front of the engine, often dripping onto the ground. Oil smell.
  • Solution: Replace the oil cooler seals. Sometimes requires removal of the turbocharger.
  • Estimated Cost to Fix: $500 - $1000+
  • Recalls: None Found
• Diesel Particulate Filter (DPF) Clogging
  • Description/Symptoms: Reduced engine power, warning lights on the dashboard (DPF light, check engine light), potential for limp mode. Primarily occurs with short trip driving where the DPF cannot regenerate effectively.
  • Solution: Forced DPF regeneration (can sometimes be done by the driver following instructions in the owner’s manual or by a mechanic using diagnostic tools), or DPF replacement if regeneration is not successful.
  • Estimated Cost to Fix: $200 (forced regeneration) - $2000+ (DPF replacement)
  • Recalls: None Found Transmission

5-Speed Automatic Transmission

• Torque Converter Shudder
  • Description/Symptoms: A noticeable vibration or shudder, primarily when accelerating gently around 30-45 mph. Can be more pronounced when the transmission is cold.
  • Solution: Transmission fluid flush with approved Mercedes-Benz fluid (specifically designed for the 722.6 transmission), or torque converter replacement if the issue persists.
  • Estimated Cost to Fix: $300 - $500 (fluid flush), $1500 - $3000+ (torque converter replacement)
  • Recalls: None Found 7-Speed Automatic Transmission (7G-Tronic)
• Valve Body Issues
  • Description/Symptoms: Harsh or delayed shifting, slipping between gears, potential for transmission to get stuck in a gear.
  • Solution: Replacement or rebuild of the valve body.
  • Estimated Cost to Fix: $1200 - $2500+
  • Recalls: None Found

Suspension

• Rear Air Suspension Compressor Failure (If Equipped)
  • Description/Symptoms: The rear of the vehicle sags, the air suspension warning light illuminates, the compressor may run constantly or not at all.
  • Solution: Replacement of the air suspension compressor.
  • Estimated Cost to Fix: $800 - $1500+
  • Recalls: None Found

Electrical

• Glow Plug Failure
  • Description/Symptoms: Hard starting in cold weather, rough idling, check engine light.
  • Solution: Replacement of the faulty glow plug(s).
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Chassis Battery Drain
  • Description/Symptoms: Vehicle battery drains quickly, especially when parked for extended periods. Difficulty starting.
  • Solution: Diagnose parasitic draw. Common culprits include aftermarket accessories, faulty modules, or damaged wiring.
  • Estimated Cost to Fix: $100 - $500+ (depending on the complexity of the issue)
  • Recalls: None Found

Exterior

• Sliding Door Issues (If Equipped)
  • Description/Symptoms: Difficulty opening or closing, sticking, noises, or malfunctioning power operation.
  • Solution: Adjustment of the door alignment, lubrication of the tracks and rollers, or replacement of faulty components such as the door motor or latch mechanism.
  • Estimated Cost to Fix: $100 - $800+
  • Recalls: None Found

Interior

• HVAC Blower Motor Failure
  • Description/Symptoms: No air coming from the vents, weak airflow, or unusual noises from the blower motor area.
  • Solution: Replacement of the blower motor.
  • Estimated Cost to Fix: $200 - $600+
  • Recalls: None Found

Summary The 2018 Mercedes-Benz Gran Viale RF, as a custom RV build, can present a range of issues, many of which are common to the Sprinter chassis on which it’s based. Engine issues such as oil cooler leaks and DPF clogging are prevalent, as well as transmission problems, particularly with the 7-speed automatic. Electrical issues and problems with the sliding door mechanism and HVAC system can also occur. The severity and cost of these repairs vary considerably, with engine and transmission repairs potentially being the most expensive, and electrical or interior issues generally being less costly.