High coolant temperatures and overheating tendency at low speeds
coolingcommon
The Euro 5 Tuono reaches coolant temperatures up to 115°C in city traffic and at traffic lights. At 115°C the engine enters shutdown mode. Owners report needing to switch off the engine during long traffic light stops. The factory-filled, undiluted coolant exacerbates the problem. Aprilia initiated an informal thermostat check at some dealers (Poland, Australia) for 2022 models (no official recall). Aftermarket solutions (MonzaTech Cooling Kit, SmartMoto CoolAIR Fan Switch) exist.
Dog wear in 3rd and 4th gear with intensive quickshifter use
drivetrainoccasional
With frequent quickshifter use under full throttle and high rpm, the dogs in 3rd and 4th gear wear faster than normal. False neutrals then occur between 3rd/4th and 4th/5th gear. Aprilia has hardened replacement parts available for 3rd and 4th gear. The problem has been documented since the V4 platform and is also confirmed for Euro 5.
Valve guide failure requiring cylinder head replacement
enginerare
At approx. 9,600 km (6,000 miles), an exhaust valve guide in the rear cylinder became detached. Symptoms: power loss (feels like electronics limp mode). Leak-down test showed less than 100 PSI instead of over 240 PSI. The entire cylinder head had to be replaced. Repair duration: almost 4 months at the dealer.
Noticeable power deficit and uneven throttle response in the lower rpm range
fuel systemvery common
The Euro 5 mapping causes a measurable power gap below 5,500 rpm. Throttle response at 4,000-5,500 rpm feels uneven/pulsating. When transitioning from 5-15% throttle to closed throttle, the engine can react jerkily. An Aprilia Race Map or Rapid Bike tuning kit largely resolves the problem.
Design flaw in airbox allows debris ingress
enginecommon
The air filter box has a design flaw where dirt and stones can enter the airbox from underneath the frame. This is a cross-generational problem of the Tuono V4 that also affects the Euro 5 generation. Can potentially damage the air filter and in the worst case the engine long-term.
Oil seepage at oil pan, drain plug, and spark plug bores
engineoccasional
Minor oil seepage (no dripping, but visible) at the oil pan gasket, drain plug, and spark plug sealing surfaces. No significant oil loss, but visually annoying. Using incorrect oil filters or sealing washers can significantly worsen the leak.
Engine Management Light (EML) during break-in period
electricsoccasional
The engine management warning light appears on some units during the break-in period. Described as a software error that falsely reports a misfire. Resolved at the first service (approx. 1,000 km) via software update.
Defective side stand switch prevents engine start
electricsrare
The side stand switch corrodes (exposed mounting position) and falsely reports "stand down", which prevents the engine from starting or stalls the engine when a gear is engaged. Side stand, neutral, and clutch switches are interlinked.
Soft paintwork, scratch-prone surfaces, corroding fasteners
bodyworkcommon
The paintwork is described as extremely scratch-prone — without adequate clear coat. Graphics/decals in some areas have no clear coat and are quickly damaged by stone chips. Fasteners and washers (particularly mudguard mountings) are not stainless and show early corrosion. Body panels do not fit precisely and have visible panel gaps.
Overheating in slow traffic
coolingoccasional
In ambient temperatures above 27°C, the engine can overheat during prolonged idling or stop-start traffic, sometimes triggering warning lights. Some owners report the need to shut off the engine at red lights to manage heat.
Dashboard overheating and hot-start issue
electricsoccasional
The digital dash may overheat and temporarily fail to start the motorcycle, particularly after being parked in direct sun or during track use. This has been reported by some owners as an intermittent problem.
Quick shifter malfunctions
drivetrainrare
Some riders have experienced erratic quickshifter behavior, often traced to a faulty switch assembly, typically replaced under warranty.
Minor oil weeps from engine covers
engineoccasional
Oil can seep from the clutch or alternator covers due to inconsistent sealant application or gasket alignment; usually addressed under warranty.
Spark plug well O-ring leaks (2021 models)
enginerare
Early 2021 production units had faulty O-ring gaskets in the spark plug wells, causing oil seepage. A redesigned part was implemented later in the production run.